idx int64 | func_before string | Vulnerability Classification string | vul int64 | func_after string | patch string | CWE ID string | lines_before string | lines_after string |
|---|---|---|---|---|---|---|---|---|
15,000 | static inline void ip6_frags_sysctl_unregister(void)
{
}
| Bypass | 0 | static inline void ip6_frags_sysctl_unregister(void)
{
}
| @@ -149,13 +149,6 @@ int ip6_frag_match(struct inet_frag_queue *q, void *a)
}
EXPORT_SYMBOL(ip6_frag_match);
-/* Memory Tracking Functions. */
-static void frag_kfree_skb(struct netns_frags *nf, struct sk_buff *skb)
-{
- atomic_sub(skb->truesize, &nf->mem);
- kfree_skb(skb);
-}
-
void ip6_frag_init(struct inet_frag_queue *q, void *a)
{
struct frag_queue *fq = container_of(q, struct frag_queue, q);
@@ -346,58 +339,22 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
}
found:
- /* We found where to put this one. Check for overlap with
- * preceding fragment, and, if needed, align things so that
- * any overlaps are eliminated.
+ /* RFC5722, Section 4:
+ * When reassembling an IPv6 datagram, if
+ * one or more its constituent fragments is determined to be an
+ * overlapping fragment, the entire datagram (and any constituent
+ * fragments, including those not yet received) MUST be silently
+ * discarded.
*/
- if (prev) {
- int i = (FRAG6_CB(prev)->offset + prev->len) - offset;
- if (i > 0) {
- offset += i;
- if (end <= offset)
- goto err;
- if (!pskb_pull(skb, i))
- goto err;
- if (skb->ip_summed != CHECKSUM_UNNECESSARY)
- skb->ip_summed = CHECKSUM_NONE;
- }
- }
+ /* Check for overlap with preceding fragment. */
+ if (prev &&
+ (FRAG6_CB(prev)->offset + prev->len) - offset > 0)
+ goto discard_fq;
- /* Look for overlap with succeeding segments.
- * If we can merge fragments, do it.
- */
- while (next && FRAG6_CB(next)->offset < end) {
- int i = end - FRAG6_CB(next)->offset; /* overlap is 'i' bytes */
-
- if (i < next->len) {
- /* Eat head of the next overlapped fragment
- * and leave the loop. The next ones cannot overlap.
- */
- if (!pskb_pull(next, i))
- goto err;
- FRAG6_CB(next)->offset += i; /* next fragment */
- fq->q.meat -= i;
- if (next->ip_summed != CHECKSUM_UNNECESSARY)
- next->ip_summed = CHECKSUM_NONE;
- break;
- } else {
- struct sk_buff *free_it = next;
-
- /* Old fragment is completely overridden with
- * new one drop it.
- */
- next = next->next;
-
- if (prev)
- prev->next = next;
- else
- fq->q.fragments = next;
-
- fq->q.meat -= free_it->len;
- frag_kfree_skb(fq->q.net, free_it);
- }
- }
+ /* Look for overlap with succeeding segment. */
+ if (next && FRAG6_CB(next)->offset < end)
+ goto discard_fq;
FRAG6_CB(skb)->offset = offset;
@@ -436,6 +393,8 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
write_unlock(&ip6_frags.lock);
return -1;
+discard_fq:
+ fq_kill(fq);
err:
IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_REASMFAILS); | null | null | null |
15,001 | static unsigned int ip6_hashfn(struct inet_frag_queue *q)
{
struct frag_queue *fq;
fq = container_of(q, struct frag_queue, q);
return inet6_hash_frag(fq->id, &fq->saddr, &fq->daddr, ip6_frags.rnd);
}
| Bypass | 0 | static unsigned int ip6_hashfn(struct inet_frag_queue *q)
{
struct frag_queue *fq;
fq = container_of(q, struct frag_queue, q);
return inet6_hash_frag(fq->id, &fq->saddr, &fq->daddr, ip6_frags.rnd);
}
| @@ -149,13 +149,6 @@ int ip6_frag_match(struct inet_frag_queue *q, void *a)
}
EXPORT_SYMBOL(ip6_frag_match);
-/* Memory Tracking Functions. */
-static void frag_kfree_skb(struct netns_frags *nf, struct sk_buff *skb)
-{
- atomic_sub(skb->truesize, &nf->mem);
- kfree_skb(skb);
-}
-
void ip6_frag_init(struct inet_frag_queue *q, void *a)
{
struct frag_queue *fq = container_of(q, struct frag_queue, q);
@@ -346,58 +339,22 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
}
found:
- /* We found where to put this one. Check for overlap with
- * preceding fragment, and, if needed, align things so that
- * any overlaps are eliminated.
+ /* RFC5722, Section 4:
+ * When reassembling an IPv6 datagram, if
+ * one or more its constituent fragments is determined to be an
+ * overlapping fragment, the entire datagram (and any constituent
+ * fragments, including those not yet received) MUST be silently
+ * discarded.
*/
- if (prev) {
- int i = (FRAG6_CB(prev)->offset + prev->len) - offset;
- if (i > 0) {
- offset += i;
- if (end <= offset)
- goto err;
- if (!pskb_pull(skb, i))
- goto err;
- if (skb->ip_summed != CHECKSUM_UNNECESSARY)
- skb->ip_summed = CHECKSUM_NONE;
- }
- }
+ /* Check for overlap with preceding fragment. */
+ if (prev &&
+ (FRAG6_CB(prev)->offset + prev->len) - offset > 0)
+ goto discard_fq;
- /* Look for overlap with succeeding segments.
- * If we can merge fragments, do it.
- */
- while (next && FRAG6_CB(next)->offset < end) {
- int i = end - FRAG6_CB(next)->offset; /* overlap is 'i' bytes */
-
- if (i < next->len) {
- /* Eat head of the next overlapped fragment
- * and leave the loop. The next ones cannot overlap.
- */
- if (!pskb_pull(next, i))
- goto err;
- FRAG6_CB(next)->offset += i; /* next fragment */
- fq->q.meat -= i;
- if (next->ip_summed != CHECKSUM_UNNECESSARY)
- next->ip_summed = CHECKSUM_NONE;
- break;
- } else {
- struct sk_buff *free_it = next;
-
- /* Old fragment is completely overridden with
- * new one drop it.
- */
- next = next->next;
-
- if (prev)
- prev->next = next;
- else
- fq->q.fragments = next;
-
- fq->q.meat -= free_it->len;
- frag_kfree_skb(fq->q.net, free_it);
- }
- }
+ /* Look for overlap with succeeding segment. */
+ if (next && FRAG6_CB(next)->offset < end)
+ goto discard_fq;
FRAG6_CB(skb)->offset = offset;
@@ -436,6 +393,8 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
write_unlock(&ip6_frags.lock);
return -1;
+discard_fq:
+ fq_kill(fq);
err:
IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_REASMFAILS); | null | null | null |
15,002 | void ipv6_frag_exit(void)
{
inet_frags_fini(&ip6_frags);
ip6_frags_sysctl_unregister();
unregister_pernet_subsys(&ip6_frags_ops);
inet6_del_protocol(&frag_protocol, IPPROTO_FRAGMENT);
}
| Bypass | 0 | void ipv6_frag_exit(void)
{
inet_frags_fini(&ip6_frags);
ip6_frags_sysctl_unregister();
unregister_pernet_subsys(&ip6_frags_ops);
inet6_del_protocol(&frag_protocol, IPPROTO_FRAGMENT);
}
| @@ -149,13 +149,6 @@ int ip6_frag_match(struct inet_frag_queue *q, void *a)
}
EXPORT_SYMBOL(ip6_frag_match);
-/* Memory Tracking Functions. */
-static void frag_kfree_skb(struct netns_frags *nf, struct sk_buff *skb)
-{
- atomic_sub(skb->truesize, &nf->mem);
- kfree_skb(skb);
-}
-
void ip6_frag_init(struct inet_frag_queue *q, void *a)
{
struct frag_queue *fq = container_of(q, struct frag_queue, q);
@@ -346,58 +339,22 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
}
found:
- /* We found where to put this one. Check for overlap with
- * preceding fragment, and, if needed, align things so that
- * any overlaps are eliminated.
+ /* RFC5722, Section 4:
+ * When reassembling an IPv6 datagram, if
+ * one or more its constituent fragments is determined to be an
+ * overlapping fragment, the entire datagram (and any constituent
+ * fragments, including those not yet received) MUST be silently
+ * discarded.
*/
- if (prev) {
- int i = (FRAG6_CB(prev)->offset + prev->len) - offset;
- if (i > 0) {
- offset += i;
- if (end <= offset)
- goto err;
- if (!pskb_pull(skb, i))
- goto err;
- if (skb->ip_summed != CHECKSUM_UNNECESSARY)
- skb->ip_summed = CHECKSUM_NONE;
- }
- }
+ /* Check for overlap with preceding fragment. */
+ if (prev &&
+ (FRAG6_CB(prev)->offset + prev->len) - offset > 0)
+ goto discard_fq;
- /* Look for overlap with succeeding segments.
- * If we can merge fragments, do it.
- */
- while (next && FRAG6_CB(next)->offset < end) {
- int i = end - FRAG6_CB(next)->offset; /* overlap is 'i' bytes */
-
- if (i < next->len) {
- /* Eat head of the next overlapped fragment
- * and leave the loop. The next ones cannot overlap.
- */
- if (!pskb_pull(next, i))
- goto err;
- FRAG6_CB(next)->offset += i; /* next fragment */
- fq->q.meat -= i;
- if (next->ip_summed != CHECKSUM_UNNECESSARY)
- next->ip_summed = CHECKSUM_NONE;
- break;
- } else {
- struct sk_buff *free_it = next;
-
- /* Old fragment is completely overridden with
- * new one drop it.
- */
- next = next->next;
-
- if (prev)
- prev->next = next;
- else
- fq->q.fragments = next;
-
- fq->q.meat -= free_it->len;
- frag_kfree_skb(fq->q.net, free_it);
- }
- }
+ /* Look for overlap with succeeding segment. */
+ if (next && FRAG6_CB(next)->offset < end)
+ goto discard_fq;
FRAG6_CB(skb)->offset = offset;
@@ -436,6 +393,8 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
write_unlock(&ip6_frags.lock);
return -1;
+discard_fq:
+ fq_kill(fq);
err:
IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_REASMFAILS); | null | null | null |
15,003 | int __init ipv6_frag_init(void)
{
int ret;
ret = inet6_add_protocol(&frag_protocol, IPPROTO_FRAGMENT);
if (ret)
goto out;
ret = ip6_frags_sysctl_register();
if (ret)
goto err_sysctl;
ret = register_pernet_subsys(&ip6_frags_ops);
if (ret)
goto err_pernet;
ip6_frags.hashfn = ip6_hashfn;
ip6_frags.constructor = ip6_frag_init;
ip6_frags.destructor = NULL;
ip6_frags.skb_free = NULL;
ip6_frags.qsize = sizeof(struct frag_queue);
ip6_frags.match = ip6_frag_match;
ip6_frags.frag_expire = ip6_frag_expire;
ip6_frags.secret_interval = 10 * 60 * HZ;
inet_frags_init(&ip6_frags);
out:
return ret;
err_pernet:
ip6_frags_sysctl_unregister();
err_sysctl:
inet6_del_protocol(&frag_protocol, IPPROTO_FRAGMENT);
goto out;
}
| Bypass | 0 | int __init ipv6_frag_init(void)
{
int ret;
ret = inet6_add_protocol(&frag_protocol, IPPROTO_FRAGMENT);
if (ret)
goto out;
ret = ip6_frags_sysctl_register();
if (ret)
goto err_sysctl;
ret = register_pernet_subsys(&ip6_frags_ops);
if (ret)
goto err_pernet;
ip6_frags.hashfn = ip6_hashfn;
ip6_frags.constructor = ip6_frag_init;
ip6_frags.destructor = NULL;
ip6_frags.skb_free = NULL;
ip6_frags.qsize = sizeof(struct frag_queue);
ip6_frags.match = ip6_frag_match;
ip6_frags.frag_expire = ip6_frag_expire;
ip6_frags.secret_interval = 10 * 60 * HZ;
inet_frags_init(&ip6_frags);
out:
return ret;
err_pernet:
ip6_frags_sysctl_unregister();
err_sysctl:
inet6_del_protocol(&frag_protocol, IPPROTO_FRAGMENT);
goto out;
}
| @@ -149,13 +149,6 @@ int ip6_frag_match(struct inet_frag_queue *q, void *a)
}
EXPORT_SYMBOL(ip6_frag_match);
-/* Memory Tracking Functions. */
-static void frag_kfree_skb(struct netns_frags *nf, struct sk_buff *skb)
-{
- atomic_sub(skb->truesize, &nf->mem);
- kfree_skb(skb);
-}
-
void ip6_frag_init(struct inet_frag_queue *q, void *a)
{
struct frag_queue *fq = container_of(q, struct frag_queue, q);
@@ -346,58 +339,22 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
}
found:
- /* We found where to put this one. Check for overlap with
- * preceding fragment, and, if needed, align things so that
- * any overlaps are eliminated.
+ /* RFC5722, Section 4:
+ * When reassembling an IPv6 datagram, if
+ * one or more its constituent fragments is determined to be an
+ * overlapping fragment, the entire datagram (and any constituent
+ * fragments, including those not yet received) MUST be silently
+ * discarded.
*/
- if (prev) {
- int i = (FRAG6_CB(prev)->offset + prev->len) - offset;
- if (i > 0) {
- offset += i;
- if (end <= offset)
- goto err;
- if (!pskb_pull(skb, i))
- goto err;
- if (skb->ip_summed != CHECKSUM_UNNECESSARY)
- skb->ip_summed = CHECKSUM_NONE;
- }
- }
+ /* Check for overlap with preceding fragment. */
+ if (prev &&
+ (FRAG6_CB(prev)->offset + prev->len) - offset > 0)
+ goto discard_fq;
- /* Look for overlap with succeeding segments.
- * If we can merge fragments, do it.
- */
- while (next && FRAG6_CB(next)->offset < end) {
- int i = end - FRAG6_CB(next)->offset; /* overlap is 'i' bytes */
-
- if (i < next->len) {
- /* Eat head of the next overlapped fragment
- * and leave the loop. The next ones cannot overlap.
- */
- if (!pskb_pull(next, i))
- goto err;
- FRAG6_CB(next)->offset += i; /* next fragment */
- fq->q.meat -= i;
- if (next->ip_summed != CHECKSUM_UNNECESSARY)
- next->ip_summed = CHECKSUM_NONE;
- break;
- } else {
- struct sk_buff *free_it = next;
-
- /* Old fragment is completely overridden with
- * new one drop it.
- */
- next = next->next;
-
- if (prev)
- prev->next = next;
- else
- fq->q.fragments = next;
-
- fq->q.meat -= free_it->len;
- frag_kfree_skb(fq->q.net, free_it);
- }
- }
+ /* Look for overlap with succeeding segment. */
+ if (next && FRAG6_CB(next)->offset < end)
+ goto discard_fq;
FRAG6_CB(skb)->offset = offset;
@@ -436,6 +393,8 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
write_unlock(&ip6_frags.lock);
return -1;
+discard_fq:
+ fq_kill(fq);
err:
IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_REASMFAILS); | null | null | null |
15,004 | static int ipv6_frag_rcv(struct sk_buff *skb)
{
struct frag_hdr *fhdr;
struct frag_queue *fq;
struct ipv6hdr *hdr = ipv6_hdr(skb);
struct net *net = dev_net(skb_dst(skb)->dev);
IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_REASMREQDS);
/* Jumbo payload inhibits frag. header */
if (hdr->payload_len==0)
goto fail_hdr;
if (!pskb_may_pull(skb, (skb_transport_offset(skb) +
sizeof(struct frag_hdr))))
goto fail_hdr;
hdr = ipv6_hdr(skb);
fhdr = (struct frag_hdr *)skb_transport_header(skb);
if (!(fhdr->frag_off & htons(0xFFF9))) {
/* It is not a fragmented frame */
skb->transport_header += sizeof(struct frag_hdr);
IP6_INC_STATS_BH(net,
ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_REASMOKS);
IP6CB(skb)->nhoff = (u8 *)fhdr - skb_network_header(skb);
return 1;
}
if (atomic_read(&net->ipv6.frags.mem) > net->ipv6.frags.high_thresh)
ip6_evictor(net, ip6_dst_idev(skb_dst(skb)));
fq = fq_find(net, fhdr->identification, &hdr->saddr, &hdr->daddr);
if (fq != NULL) {
int ret;
spin_lock(&fq->q.lock);
ret = ip6_frag_queue(fq, skb, fhdr, IP6CB(skb)->nhoff);
spin_unlock(&fq->q.lock);
fq_put(fq);
return ret;
}
IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_REASMFAILS);
kfree_skb(skb);
return -1;
fail_hdr:
IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_INHDRERRORS);
icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, skb_network_header_len(skb));
return -1;
}
| Bypass | 0 | static int ipv6_frag_rcv(struct sk_buff *skb)
{
struct frag_hdr *fhdr;
struct frag_queue *fq;
struct ipv6hdr *hdr = ipv6_hdr(skb);
struct net *net = dev_net(skb_dst(skb)->dev);
IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_REASMREQDS);
/* Jumbo payload inhibits frag. header */
if (hdr->payload_len==0)
goto fail_hdr;
if (!pskb_may_pull(skb, (skb_transport_offset(skb) +
sizeof(struct frag_hdr))))
goto fail_hdr;
hdr = ipv6_hdr(skb);
fhdr = (struct frag_hdr *)skb_transport_header(skb);
if (!(fhdr->frag_off & htons(0xFFF9))) {
/* It is not a fragmented frame */
skb->transport_header += sizeof(struct frag_hdr);
IP6_INC_STATS_BH(net,
ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_REASMOKS);
IP6CB(skb)->nhoff = (u8 *)fhdr - skb_network_header(skb);
return 1;
}
if (atomic_read(&net->ipv6.frags.mem) > net->ipv6.frags.high_thresh)
ip6_evictor(net, ip6_dst_idev(skb_dst(skb)));
fq = fq_find(net, fhdr->identification, &hdr->saddr, &hdr->daddr);
if (fq != NULL) {
int ret;
spin_lock(&fq->q.lock);
ret = ip6_frag_queue(fq, skb, fhdr, IP6CB(skb)->nhoff);
spin_unlock(&fq->q.lock);
fq_put(fq);
return ret;
}
IP6_INC_STATS_BH(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_REASMFAILS);
kfree_skb(skb);
return -1;
fail_hdr:
IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)), IPSTATS_MIB_INHDRERRORS);
icmpv6_param_prob(skb, ICMPV6_HDR_FIELD, skb_network_header_len(skb));
return -1;
}
| @@ -149,13 +149,6 @@ int ip6_frag_match(struct inet_frag_queue *q, void *a)
}
EXPORT_SYMBOL(ip6_frag_match);
-/* Memory Tracking Functions. */
-static void frag_kfree_skb(struct netns_frags *nf, struct sk_buff *skb)
-{
- atomic_sub(skb->truesize, &nf->mem);
- kfree_skb(skb);
-}
-
void ip6_frag_init(struct inet_frag_queue *q, void *a)
{
struct frag_queue *fq = container_of(q, struct frag_queue, q);
@@ -346,58 +339,22 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
}
found:
- /* We found where to put this one. Check for overlap with
- * preceding fragment, and, if needed, align things so that
- * any overlaps are eliminated.
+ /* RFC5722, Section 4:
+ * When reassembling an IPv6 datagram, if
+ * one or more its constituent fragments is determined to be an
+ * overlapping fragment, the entire datagram (and any constituent
+ * fragments, including those not yet received) MUST be silently
+ * discarded.
*/
- if (prev) {
- int i = (FRAG6_CB(prev)->offset + prev->len) - offset;
- if (i > 0) {
- offset += i;
- if (end <= offset)
- goto err;
- if (!pskb_pull(skb, i))
- goto err;
- if (skb->ip_summed != CHECKSUM_UNNECESSARY)
- skb->ip_summed = CHECKSUM_NONE;
- }
- }
+ /* Check for overlap with preceding fragment. */
+ if (prev &&
+ (FRAG6_CB(prev)->offset + prev->len) - offset > 0)
+ goto discard_fq;
- /* Look for overlap with succeeding segments.
- * If we can merge fragments, do it.
- */
- while (next && FRAG6_CB(next)->offset < end) {
- int i = end - FRAG6_CB(next)->offset; /* overlap is 'i' bytes */
-
- if (i < next->len) {
- /* Eat head of the next overlapped fragment
- * and leave the loop. The next ones cannot overlap.
- */
- if (!pskb_pull(next, i))
- goto err;
- FRAG6_CB(next)->offset += i; /* next fragment */
- fq->q.meat -= i;
- if (next->ip_summed != CHECKSUM_UNNECESSARY)
- next->ip_summed = CHECKSUM_NONE;
- break;
- } else {
- struct sk_buff *free_it = next;
-
- /* Old fragment is completely overridden with
- * new one drop it.
- */
- next = next->next;
-
- if (prev)
- prev->next = next;
- else
- fq->q.fragments = next;
-
- fq->q.meat -= free_it->len;
- frag_kfree_skb(fq->q.net, free_it);
- }
- }
+ /* Look for overlap with succeeding segment. */
+ if (next && FRAG6_CB(next)->offset < end)
+ goto discard_fq;
FRAG6_CB(skb)->offset = offset;
@@ -436,6 +393,8 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
write_unlock(&ip6_frags.lock);
return -1;
+discard_fq:
+ fq_kill(fq);
err:
IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_REASMFAILS); | null | null | null |
15,005 | static void __net_exit ipv6_frags_exit_net(struct net *net)
{
ip6_frags_ns_sysctl_unregister(net);
inet_frags_exit_net(&net->ipv6.frags, &ip6_frags);
}
| Bypass | 0 | static void __net_exit ipv6_frags_exit_net(struct net *net)
{
ip6_frags_ns_sysctl_unregister(net);
inet_frags_exit_net(&net->ipv6.frags, &ip6_frags);
}
| @@ -149,13 +149,6 @@ int ip6_frag_match(struct inet_frag_queue *q, void *a)
}
EXPORT_SYMBOL(ip6_frag_match);
-/* Memory Tracking Functions. */
-static void frag_kfree_skb(struct netns_frags *nf, struct sk_buff *skb)
-{
- atomic_sub(skb->truesize, &nf->mem);
- kfree_skb(skb);
-}
-
void ip6_frag_init(struct inet_frag_queue *q, void *a)
{
struct frag_queue *fq = container_of(q, struct frag_queue, q);
@@ -346,58 +339,22 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
}
found:
- /* We found where to put this one. Check for overlap with
- * preceding fragment, and, if needed, align things so that
- * any overlaps are eliminated.
+ /* RFC5722, Section 4:
+ * When reassembling an IPv6 datagram, if
+ * one or more its constituent fragments is determined to be an
+ * overlapping fragment, the entire datagram (and any constituent
+ * fragments, including those not yet received) MUST be silently
+ * discarded.
*/
- if (prev) {
- int i = (FRAG6_CB(prev)->offset + prev->len) - offset;
- if (i > 0) {
- offset += i;
- if (end <= offset)
- goto err;
- if (!pskb_pull(skb, i))
- goto err;
- if (skb->ip_summed != CHECKSUM_UNNECESSARY)
- skb->ip_summed = CHECKSUM_NONE;
- }
- }
+ /* Check for overlap with preceding fragment. */
+ if (prev &&
+ (FRAG6_CB(prev)->offset + prev->len) - offset > 0)
+ goto discard_fq;
- /* Look for overlap with succeeding segments.
- * If we can merge fragments, do it.
- */
- while (next && FRAG6_CB(next)->offset < end) {
- int i = end - FRAG6_CB(next)->offset; /* overlap is 'i' bytes */
-
- if (i < next->len) {
- /* Eat head of the next overlapped fragment
- * and leave the loop. The next ones cannot overlap.
- */
- if (!pskb_pull(next, i))
- goto err;
- FRAG6_CB(next)->offset += i; /* next fragment */
- fq->q.meat -= i;
- if (next->ip_summed != CHECKSUM_UNNECESSARY)
- next->ip_summed = CHECKSUM_NONE;
- break;
- } else {
- struct sk_buff *free_it = next;
-
- /* Old fragment is completely overridden with
- * new one drop it.
- */
- next = next->next;
-
- if (prev)
- prev->next = next;
- else
- fq->q.fragments = next;
-
- fq->q.meat -= free_it->len;
- frag_kfree_skb(fq->q.net, free_it);
- }
- }
+ /* Look for overlap with succeeding segment. */
+ if (next && FRAG6_CB(next)->offset < end)
+ goto discard_fq;
FRAG6_CB(skb)->offset = offset;
@@ -436,6 +393,8 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
write_unlock(&ip6_frags.lock);
return -1;
+discard_fq:
+ fq_kill(fq);
err:
IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_REASMFAILS); | null | null | null |
15,006 | static int __net_init ipv6_frags_init_net(struct net *net)
{
net->ipv6.frags.high_thresh = IPV6_FRAG_HIGH_THRESH;
net->ipv6.frags.low_thresh = IPV6_FRAG_LOW_THRESH;
net->ipv6.frags.timeout = IPV6_FRAG_TIMEOUT;
inet_frags_init_net(&net->ipv6.frags);
return ip6_frags_ns_sysctl_register(net);
}
| Bypass | 0 | static int __net_init ipv6_frags_init_net(struct net *net)
{
net->ipv6.frags.high_thresh = IPV6_FRAG_HIGH_THRESH;
net->ipv6.frags.low_thresh = IPV6_FRAG_LOW_THRESH;
net->ipv6.frags.timeout = IPV6_FRAG_TIMEOUT;
inet_frags_init_net(&net->ipv6.frags);
return ip6_frags_ns_sysctl_register(net);
}
| @@ -149,13 +149,6 @@ int ip6_frag_match(struct inet_frag_queue *q, void *a)
}
EXPORT_SYMBOL(ip6_frag_match);
-/* Memory Tracking Functions. */
-static void frag_kfree_skb(struct netns_frags *nf, struct sk_buff *skb)
-{
- atomic_sub(skb->truesize, &nf->mem);
- kfree_skb(skb);
-}
-
void ip6_frag_init(struct inet_frag_queue *q, void *a)
{
struct frag_queue *fq = container_of(q, struct frag_queue, q);
@@ -346,58 +339,22 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
}
found:
- /* We found where to put this one. Check for overlap with
- * preceding fragment, and, if needed, align things so that
- * any overlaps are eliminated.
+ /* RFC5722, Section 4:
+ * When reassembling an IPv6 datagram, if
+ * one or more its constituent fragments is determined to be an
+ * overlapping fragment, the entire datagram (and any constituent
+ * fragments, including those not yet received) MUST be silently
+ * discarded.
*/
- if (prev) {
- int i = (FRAG6_CB(prev)->offset + prev->len) - offset;
- if (i > 0) {
- offset += i;
- if (end <= offset)
- goto err;
- if (!pskb_pull(skb, i))
- goto err;
- if (skb->ip_summed != CHECKSUM_UNNECESSARY)
- skb->ip_summed = CHECKSUM_NONE;
- }
- }
+ /* Check for overlap with preceding fragment. */
+ if (prev &&
+ (FRAG6_CB(prev)->offset + prev->len) - offset > 0)
+ goto discard_fq;
- /* Look for overlap with succeeding segments.
- * If we can merge fragments, do it.
- */
- while (next && FRAG6_CB(next)->offset < end) {
- int i = end - FRAG6_CB(next)->offset; /* overlap is 'i' bytes */
-
- if (i < next->len) {
- /* Eat head of the next overlapped fragment
- * and leave the loop. The next ones cannot overlap.
- */
- if (!pskb_pull(next, i))
- goto err;
- FRAG6_CB(next)->offset += i; /* next fragment */
- fq->q.meat -= i;
- if (next->ip_summed != CHECKSUM_UNNECESSARY)
- next->ip_summed = CHECKSUM_NONE;
- break;
- } else {
- struct sk_buff *free_it = next;
-
- /* Old fragment is completely overridden with
- * new one drop it.
- */
- next = next->next;
-
- if (prev)
- prev->next = next;
- else
- fq->q.fragments = next;
-
- fq->q.meat -= free_it->len;
- frag_kfree_skb(fq->q.net, free_it);
- }
- }
+ /* Look for overlap with succeeding segment. */
+ if (next && FRAG6_CB(next)->offset < end)
+ goto discard_fq;
FRAG6_CB(skb)->offset = offset;
@@ -436,6 +393,8 @@ static int ip6_frag_queue(struct frag_queue *fq, struct sk_buff *skb,
write_unlock(&ip6_frags.lock);
return -1;
+discard_fq:
+ fq_kill(fq);
err:
IP6_INC_STATS(net, ip6_dst_idev(skb_dst(skb)),
IPSTATS_MIB_REASMFAILS); | null | null | null |
15,007 | static inline void dccp_do_pmtu_discovery(struct sock *sk,
const struct iphdr *iph,
u32 mtu)
{
struct dst_entry *dst;
const struct inet_sock *inet = inet_sk(sk);
const struct dccp_sock *dp = dccp_sk(sk);
/* We are not interested in DCCP_LISTEN and request_socks (RESPONSEs
* send out by Linux are always < 576bytes so they should go through
* unfragmented).
*/
if (sk->sk_state == DCCP_LISTEN)
return;
/* We don't check in the destentry if pmtu discovery is forbidden
* on this route. We just assume that no packet_to_big packets
* are send back when pmtu discovery is not active.
* There is a small race when the user changes this flag in the
* route, but I think that's acceptable.
*/
if ((dst = __sk_dst_check(sk, 0)) == NULL)
return;
dst->ops->update_pmtu(dst, mtu);
/* Something is about to be wrong... Remember soft error
* for the case, if this connection will not able to recover.
*/
if (mtu < dst_mtu(dst) && ip_dont_fragment(sk, dst))
sk->sk_err_soft = EMSGSIZE;
mtu = dst_mtu(dst);
if (inet->pmtudisc != IP_PMTUDISC_DONT &&
inet_csk(sk)->icsk_pmtu_cookie > mtu) {
dccp_sync_mss(sk, mtu);
/*
* From RFC 4340, sec. 14.1:
*
* DCCP-Sync packets are the best choice for upward
* probing, since DCCP-Sync probes do not risk application
* data loss.
*/
dccp_send_sync(sk, dp->dccps_gsr, DCCP_PKT_SYNC);
} /* else let the usual retransmit timer handle it */
}
| DoS | 0 | static inline void dccp_do_pmtu_discovery(struct sock *sk,
const struct iphdr *iph,
u32 mtu)
{
struct dst_entry *dst;
const struct inet_sock *inet = inet_sk(sk);
const struct dccp_sock *dp = dccp_sk(sk);
/* We are not interested in DCCP_LISTEN and request_socks (RESPONSEs
* send out by Linux are always < 576bytes so they should go through
* unfragmented).
*/
if (sk->sk_state == DCCP_LISTEN)
return;
/* We don't check in the destentry if pmtu discovery is forbidden
* on this route. We just assume that no packet_to_big packets
* are send back when pmtu discovery is not active.
* There is a small race when the user changes this flag in the
* route, but I think that's acceptable.
*/
if ((dst = __sk_dst_check(sk, 0)) == NULL)
return;
dst->ops->update_pmtu(dst, mtu);
/* Something is about to be wrong... Remember soft error
* for the case, if this connection will not able to recover.
*/
if (mtu < dst_mtu(dst) && ip_dont_fragment(sk, dst))
sk->sk_err_soft = EMSGSIZE;
mtu = dst_mtu(dst);
if (inet->pmtudisc != IP_PMTUDISC_DONT &&
inet_csk(sk)->icsk_pmtu_cookie > mtu) {
dccp_sync_mss(sk, mtu);
/*
* From RFC 4340, sec. 14.1:
*
* DCCP-Sync packets are the best choice for upward
* probing, since DCCP-Sync probes do not risk application
* data loss.
*/
dccp_send_sync(sk, dp->dccps_gsr, DCCP_PKT_SYNC);
} /* else let the usual retransmit timer handle it */
}
| @@ -48,6 +48,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
struct flowi4 fl4;
struct rtable *rt;
int err;
+ struct ip_options_rcu *inet_opt;
dp->dccps_role = DCCP_ROLE_CLIENT;
@@ -58,10 +59,13 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -EAFNOSUPPORT;
nexthop = daddr = usin->sin_addr.s_addr;
- if (inet->opt != NULL && inet->opt->srr) {
+
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt != NULL && inet_opt->opt.srr) {
if (daddr == 0)
return -EINVAL;
- nexthop = inet->opt->faddr;
+ nexthop = inet_opt->opt.faddr;
}
orig_sport = inet->inet_sport;
@@ -78,7 +82,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -ENETUNREACH;
}
- if (inet->opt == NULL || !inet->opt->srr)
+ if (inet_opt == NULL || !inet_opt->opt.srr)
daddr = rt->rt_dst;
if (inet->inet_saddr == 0)
@@ -89,8 +93,8 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr = daddr;
inet_csk(sk)->icsk_ext_hdr_len = 0;
- if (inet->opt != NULL)
- inet_csk(sk)->icsk_ext_hdr_len = inet->opt->optlen;
+ if (inet_opt)
+ inet_csk(sk)->icsk_ext_hdr_len = inet_opt->opt.optlen;
/*
* Socket identity is still unknown (sport may be zero).
* However we set state to DCCP_REQUESTING and not releasing socket
@@ -405,7 +409,7 @@ struct sock *dccp_v4_request_recv_sock(struct sock *sk, struct sk_buff *skb,
newinet->inet_daddr = ireq->rmt_addr;
newinet->inet_rcv_saddr = ireq->loc_addr;
newinet->inet_saddr = ireq->loc_addr;
- newinet->opt = ireq->opt;
+ newinet->inet_opt = ireq->opt;
ireq->opt = NULL;
newinet->mc_index = inet_iif(skb);
newinet->mc_ttl = ip_hdr(skb)->ttl; | CWE-362 | null | null |
15,008 | int dccp_invalid_packet(struct sk_buff *skb)
{
const struct dccp_hdr *dh;
unsigned int cscov;
if (skb->pkt_type != PACKET_HOST)
return 1;
/* If the packet is shorter than 12 bytes, drop packet and return */
if (!pskb_may_pull(skb, sizeof(struct dccp_hdr))) {
DCCP_WARN("pskb_may_pull failed\n");
return 1;
}
dh = dccp_hdr(skb);
/* If P.type is not understood, drop packet and return */
if (dh->dccph_type >= DCCP_PKT_INVALID) {
DCCP_WARN("invalid packet type\n");
return 1;
}
/*
* If P.Data Offset is too small for packet type, drop packet and return
*/
if (dh->dccph_doff < dccp_hdr_len(skb) / sizeof(u32)) {
DCCP_WARN("P.Data Offset(%u) too small\n", dh->dccph_doff);
return 1;
}
/*
* If P.Data Offset is too too large for packet, drop packet and return
*/
if (!pskb_may_pull(skb, dh->dccph_doff * sizeof(u32))) {
DCCP_WARN("P.Data Offset(%u) too large\n", dh->dccph_doff);
return 1;
}
/*
* If P.type is not Data, Ack, or DataAck and P.X == 0 (the packet
* has short sequence numbers), drop packet and return
*/
if ((dh->dccph_type < DCCP_PKT_DATA ||
dh->dccph_type > DCCP_PKT_DATAACK) && dh->dccph_x == 0) {
DCCP_WARN("P.type (%s) not Data || [Data]Ack, while P.X == 0\n",
dccp_packet_name(dh->dccph_type));
return 1;
}
/*
* If P.CsCov is too large for the packet size, drop packet and return.
* This must come _before_ checksumming (not as RFC 4340 suggests).
*/
cscov = dccp_csum_coverage(skb);
if (cscov > skb->len) {
DCCP_WARN("P.CsCov %u exceeds packet length %d\n",
dh->dccph_cscov, skb->len);
return 1;
}
/* If header checksum is incorrect, drop packet and return.
* (This step is completed in the AF-dependent functions.) */
skb->csum = skb_checksum(skb, 0, cscov, 0);
return 0;
}
| DoS | 0 | int dccp_invalid_packet(struct sk_buff *skb)
{
const struct dccp_hdr *dh;
unsigned int cscov;
if (skb->pkt_type != PACKET_HOST)
return 1;
/* If the packet is shorter than 12 bytes, drop packet and return */
if (!pskb_may_pull(skb, sizeof(struct dccp_hdr))) {
DCCP_WARN("pskb_may_pull failed\n");
return 1;
}
dh = dccp_hdr(skb);
/* If P.type is not understood, drop packet and return */
if (dh->dccph_type >= DCCP_PKT_INVALID) {
DCCP_WARN("invalid packet type\n");
return 1;
}
/*
* If P.Data Offset is too small for packet type, drop packet and return
*/
if (dh->dccph_doff < dccp_hdr_len(skb) / sizeof(u32)) {
DCCP_WARN("P.Data Offset(%u) too small\n", dh->dccph_doff);
return 1;
}
/*
* If P.Data Offset is too too large for packet, drop packet and return
*/
if (!pskb_may_pull(skb, dh->dccph_doff * sizeof(u32))) {
DCCP_WARN("P.Data Offset(%u) too large\n", dh->dccph_doff);
return 1;
}
/*
* If P.type is not Data, Ack, or DataAck and P.X == 0 (the packet
* has short sequence numbers), drop packet and return
*/
if ((dh->dccph_type < DCCP_PKT_DATA ||
dh->dccph_type > DCCP_PKT_DATAACK) && dh->dccph_x == 0) {
DCCP_WARN("P.type (%s) not Data || [Data]Ack, while P.X == 0\n",
dccp_packet_name(dh->dccph_type));
return 1;
}
/*
* If P.CsCov is too large for the packet size, drop packet and return.
* This must come _before_ checksumming (not as RFC 4340 suggests).
*/
cscov = dccp_csum_coverage(skb);
if (cscov > skb->len) {
DCCP_WARN("P.CsCov %u exceeds packet length %d\n",
dh->dccph_cscov, skb->len);
return 1;
}
/* If header checksum is incorrect, drop packet and return.
* (This step is completed in the AF-dependent functions.) */
skb->csum = skb_checksum(skb, 0, cscov, 0);
return 0;
}
| @@ -48,6 +48,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
struct flowi4 fl4;
struct rtable *rt;
int err;
+ struct ip_options_rcu *inet_opt;
dp->dccps_role = DCCP_ROLE_CLIENT;
@@ -58,10 +59,13 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -EAFNOSUPPORT;
nexthop = daddr = usin->sin_addr.s_addr;
- if (inet->opt != NULL && inet->opt->srr) {
+
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt != NULL && inet_opt->opt.srr) {
if (daddr == 0)
return -EINVAL;
- nexthop = inet->opt->faddr;
+ nexthop = inet_opt->opt.faddr;
}
orig_sport = inet->inet_sport;
@@ -78,7 +82,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -ENETUNREACH;
}
- if (inet->opt == NULL || !inet->opt->srr)
+ if (inet_opt == NULL || !inet_opt->opt.srr)
daddr = rt->rt_dst;
if (inet->inet_saddr == 0)
@@ -89,8 +93,8 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr = daddr;
inet_csk(sk)->icsk_ext_hdr_len = 0;
- if (inet->opt != NULL)
- inet_csk(sk)->icsk_ext_hdr_len = inet->opt->optlen;
+ if (inet_opt)
+ inet_csk(sk)->icsk_ext_hdr_len = inet_opt->opt.optlen;
/*
* Socket identity is still unknown (sport may be zero).
* However we set state to DCCP_REQUESTING and not releasing socket
@@ -405,7 +409,7 @@ struct sock *dccp_v4_request_recv_sock(struct sock *sk, struct sk_buff *skb,
newinet->inet_daddr = ireq->rmt_addr;
newinet->inet_rcv_saddr = ireq->loc_addr;
newinet->inet_saddr = ireq->loc_addr;
- newinet->opt = ireq->opt;
+ newinet->inet_opt = ireq->opt;
ireq->opt = NULL;
newinet->mc_index = inet_iif(skb);
newinet->mc_ttl = ip_hdr(skb)->ttl; | CWE-362 | null | null |
15,009 | static inline __sum16 dccp_v4_csum_finish(struct sk_buff *skb,
__be32 src, __be32 dst)
{
return csum_tcpudp_magic(src, dst, skb->len, IPPROTO_DCCP, skb->csum);
}
| DoS | 0 | static inline __sum16 dccp_v4_csum_finish(struct sk_buff *skb,
__be32 src, __be32 dst)
{
return csum_tcpudp_magic(src, dst, skb->len, IPPROTO_DCCP, skb->csum);
}
| @@ -48,6 +48,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
struct flowi4 fl4;
struct rtable *rt;
int err;
+ struct ip_options_rcu *inet_opt;
dp->dccps_role = DCCP_ROLE_CLIENT;
@@ -58,10 +59,13 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -EAFNOSUPPORT;
nexthop = daddr = usin->sin_addr.s_addr;
- if (inet->opt != NULL && inet->opt->srr) {
+
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt != NULL && inet_opt->opt.srr) {
if (daddr == 0)
return -EINVAL;
- nexthop = inet->opt->faddr;
+ nexthop = inet_opt->opt.faddr;
}
orig_sport = inet->inet_sport;
@@ -78,7 +82,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -ENETUNREACH;
}
- if (inet->opt == NULL || !inet->opt->srr)
+ if (inet_opt == NULL || !inet_opt->opt.srr)
daddr = rt->rt_dst;
if (inet->inet_saddr == 0)
@@ -89,8 +93,8 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr = daddr;
inet_csk(sk)->icsk_ext_hdr_len = 0;
- if (inet->opt != NULL)
- inet_csk(sk)->icsk_ext_hdr_len = inet->opt->optlen;
+ if (inet_opt)
+ inet_csk(sk)->icsk_ext_hdr_len = inet_opt->opt.optlen;
/*
* Socket identity is still unknown (sport may be zero).
* However we set state to DCCP_REQUESTING and not releasing socket
@@ -405,7 +409,7 @@ struct sock *dccp_v4_request_recv_sock(struct sock *sk, struct sk_buff *skb,
newinet->inet_daddr = ireq->rmt_addr;
newinet->inet_rcv_saddr = ireq->loc_addr;
newinet->inet_saddr = ireq->loc_addr;
- newinet->opt = ireq->opt;
+ newinet->inet_opt = ireq->opt;
ireq->opt = NULL;
newinet->mc_index = inet_iif(skb);
newinet->mc_ttl = ip_hdr(skb)->ttl; | CWE-362 | null | null |
15,010 | static void dccp_v4_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb)
{
int err;
const struct iphdr *rxiph;
struct sk_buff *skb;
struct dst_entry *dst;
struct net *net = dev_net(skb_dst(rxskb)->dev);
struct sock *ctl_sk = net->dccp.v4_ctl_sk;
/* Never send a reset in response to a reset. */
if (dccp_hdr(rxskb)->dccph_type == DCCP_PKT_RESET)
return;
if (skb_rtable(rxskb)->rt_type != RTN_LOCAL)
return;
dst = dccp_v4_route_skb(net, ctl_sk, rxskb);
if (dst == NULL)
return;
skb = dccp_ctl_make_reset(ctl_sk, rxskb);
if (skb == NULL)
goto out;
rxiph = ip_hdr(rxskb);
dccp_hdr(skb)->dccph_checksum = dccp_v4_csum_finish(skb, rxiph->saddr,
rxiph->daddr);
skb_dst_set(skb, dst_clone(dst));
bh_lock_sock(ctl_sk);
err = ip_build_and_send_pkt(skb, ctl_sk,
rxiph->daddr, rxiph->saddr, NULL);
bh_unlock_sock(ctl_sk);
if (net_xmit_eval(err) == 0) {
DCCP_INC_STATS_BH(DCCP_MIB_OUTSEGS);
DCCP_INC_STATS_BH(DCCP_MIB_OUTRSTS);
}
out:
dst_release(dst);
}
| DoS | 0 | static void dccp_v4_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb)
{
int err;
const struct iphdr *rxiph;
struct sk_buff *skb;
struct dst_entry *dst;
struct net *net = dev_net(skb_dst(rxskb)->dev);
struct sock *ctl_sk = net->dccp.v4_ctl_sk;
/* Never send a reset in response to a reset. */
if (dccp_hdr(rxskb)->dccph_type == DCCP_PKT_RESET)
return;
if (skb_rtable(rxskb)->rt_type != RTN_LOCAL)
return;
dst = dccp_v4_route_skb(net, ctl_sk, rxskb);
if (dst == NULL)
return;
skb = dccp_ctl_make_reset(ctl_sk, rxskb);
if (skb == NULL)
goto out;
rxiph = ip_hdr(rxskb);
dccp_hdr(skb)->dccph_checksum = dccp_v4_csum_finish(skb, rxiph->saddr,
rxiph->daddr);
skb_dst_set(skb, dst_clone(dst));
bh_lock_sock(ctl_sk);
err = ip_build_and_send_pkt(skb, ctl_sk,
rxiph->daddr, rxiph->saddr, NULL);
bh_unlock_sock(ctl_sk);
if (net_xmit_eval(err) == 0) {
DCCP_INC_STATS_BH(DCCP_MIB_OUTSEGS);
DCCP_INC_STATS_BH(DCCP_MIB_OUTRSTS);
}
out:
dst_release(dst);
}
| @@ -48,6 +48,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
struct flowi4 fl4;
struct rtable *rt;
int err;
+ struct ip_options_rcu *inet_opt;
dp->dccps_role = DCCP_ROLE_CLIENT;
@@ -58,10 +59,13 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -EAFNOSUPPORT;
nexthop = daddr = usin->sin_addr.s_addr;
- if (inet->opt != NULL && inet->opt->srr) {
+
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt != NULL && inet_opt->opt.srr) {
if (daddr == 0)
return -EINVAL;
- nexthop = inet->opt->faddr;
+ nexthop = inet_opt->opt.faddr;
}
orig_sport = inet->inet_sport;
@@ -78,7 +82,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -ENETUNREACH;
}
- if (inet->opt == NULL || !inet->opt->srr)
+ if (inet_opt == NULL || !inet_opt->opt.srr)
daddr = rt->rt_dst;
if (inet->inet_saddr == 0)
@@ -89,8 +93,8 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr = daddr;
inet_csk(sk)->icsk_ext_hdr_len = 0;
- if (inet->opt != NULL)
- inet_csk(sk)->icsk_ext_hdr_len = inet->opt->optlen;
+ if (inet_opt)
+ inet_csk(sk)->icsk_ext_hdr_len = inet_opt->opt.optlen;
/*
* Socket identity is still unknown (sport may be zero).
* However we set state to DCCP_REQUESTING and not releasing socket
@@ -405,7 +409,7 @@ struct sock *dccp_v4_request_recv_sock(struct sock *sk, struct sk_buff *skb,
newinet->inet_daddr = ireq->rmt_addr;
newinet->inet_rcv_saddr = ireq->loc_addr;
newinet->inet_saddr = ireq->loc_addr;
- newinet->opt = ireq->opt;
+ newinet->inet_opt = ireq->opt;
ireq->opt = NULL;
newinet->mc_index = inet_iif(skb);
newinet->mc_ttl = ip_hdr(skb)->ttl; | CWE-362 | null | null |
15,011 | static void dccp_v4_err(struct sk_buff *skb, u32 info)
{
const struct iphdr *iph = (struct iphdr *)skb->data;
const u8 offset = iph->ihl << 2;
const struct dccp_hdr *dh = (struct dccp_hdr *)(skb->data + offset);
struct dccp_sock *dp;
struct inet_sock *inet;
const int type = icmp_hdr(skb)->type;
const int code = icmp_hdr(skb)->code;
struct sock *sk;
__u64 seq;
int err;
struct net *net = dev_net(skb->dev);
if (skb->len < offset + sizeof(*dh) ||
skb->len < offset + __dccp_basic_hdr_len(dh)) {
ICMP_INC_STATS_BH(net, ICMP_MIB_INERRORS);
return;
}
sk = inet_lookup(net, &dccp_hashinfo,
iph->daddr, dh->dccph_dport,
iph->saddr, dh->dccph_sport, inet_iif(skb));
if (sk == NULL) {
ICMP_INC_STATS_BH(net, ICMP_MIB_INERRORS);
return;
}
if (sk->sk_state == DCCP_TIME_WAIT) {
inet_twsk_put(inet_twsk(sk));
return;
}
bh_lock_sock(sk);
/* If too many ICMPs get dropped on busy
* servers this needs to be solved differently.
*/
if (sock_owned_by_user(sk))
NET_INC_STATS_BH(net, LINUX_MIB_LOCKDROPPEDICMPS);
if (sk->sk_state == DCCP_CLOSED)
goto out;
dp = dccp_sk(sk);
seq = dccp_hdr_seq(dh);
if ((1 << sk->sk_state) & ~(DCCPF_REQUESTING | DCCPF_LISTEN) &&
!between48(seq, dp->dccps_awl, dp->dccps_awh)) {
NET_INC_STATS_BH(net, LINUX_MIB_OUTOFWINDOWICMPS);
goto out;
}
switch (type) {
case ICMP_SOURCE_QUENCH:
/* Just silently ignore these. */
goto out;
case ICMP_PARAMETERPROB:
err = EPROTO;
break;
case ICMP_DEST_UNREACH:
if (code > NR_ICMP_UNREACH)
goto out;
if (code == ICMP_FRAG_NEEDED) { /* PMTU discovery (RFC1191) */
if (!sock_owned_by_user(sk))
dccp_do_pmtu_discovery(sk, iph, info);
goto out;
}
err = icmp_err_convert[code].errno;
break;
case ICMP_TIME_EXCEEDED:
err = EHOSTUNREACH;
break;
default:
goto out;
}
switch (sk->sk_state) {
struct request_sock *req , **prev;
case DCCP_LISTEN:
if (sock_owned_by_user(sk))
goto out;
req = inet_csk_search_req(sk, &prev, dh->dccph_dport,
iph->daddr, iph->saddr);
if (!req)
goto out;
/*
* ICMPs are not backlogged, hence we cannot get an established
* socket here.
*/
WARN_ON(req->sk);
if (seq != dccp_rsk(req)->dreq_iss) {
NET_INC_STATS_BH(net, LINUX_MIB_OUTOFWINDOWICMPS);
goto out;
}
/*
* Still in RESPOND, just remove it silently.
* There is no good way to pass the error to the newly
* created socket, and POSIX does not want network
* errors returned from accept().
*/
inet_csk_reqsk_queue_drop(sk, req, prev);
goto out;
case DCCP_REQUESTING:
case DCCP_RESPOND:
if (!sock_owned_by_user(sk)) {
DCCP_INC_STATS_BH(DCCP_MIB_ATTEMPTFAILS);
sk->sk_err = err;
sk->sk_error_report(sk);
dccp_done(sk);
} else
sk->sk_err_soft = err;
goto out;
}
/* If we've already connected we will keep trying
* until we time out, or the user gives up.
*
* rfc1122 4.2.3.9 allows to consider as hard errors
* only PROTO_UNREACH and PORT_UNREACH (well, FRAG_FAILED too,
* but it is obsoleted by pmtu discovery).
*
* Note, that in modern internet, where routing is unreliable
* and in each dark corner broken firewalls sit, sending random
* errors ordered by their masters even this two messages finally lose
* their original sense (even Linux sends invalid PORT_UNREACHs)
*
* Now we are in compliance with RFCs.
* --ANK (980905)
*/
inet = inet_sk(sk);
if (!sock_owned_by_user(sk) && inet->recverr) {
sk->sk_err = err;
sk->sk_error_report(sk);
} else /* Only an error on timeout */
sk->sk_err_soft = err;
out:
bh_unlock_sock(sk);
sock_put(sk);
}
| DoS | 0 | static void dccp_v4_err(struct sk_buff *skb, u32 info)
{
const struct iphdr *iph = (struct iphdr *)skb->data;
const u8 offset = iph->ihl << 2;
const struct dccp_hdr *dh = (struct dccp_hdr *)(skb->data + offset);
struct dccp_sock *dp;
struct inet_sock *inet;
const int type = icmp_hdr(skb)->type;
const int code = icmp_hdr(skb)->code;
struct sock *sk;
__u64 seq;
int err;
struct net *net = dev_net(skb->dev);
if (skb->len < offset + sizeof(*dh) ||
skb->len < offset + __dccp_basic_hdr_len(dh)) {
ICMP_INC_STATS_BH(net, ICMP_MIB_INERRORS);
return;
}
sk = inet_lookup(net, &dccp_hashinfo,
iph->daddr, dh->dccph_dport,
iph->saddr, dh->dccph_sport, inet_iif(skb));
if (sk == NULL) {
ICMP_INC_STATS_BH(net, ICMP_MIB_INERRORS);
return;
}
if (sk->sk_state == DCCP_TIME_WAIT) {
inet_twsk_put(inet_twsk(sk));
return;
}
bh_lock_sock(sk);
/* If too many ICMPs get dropped on busy
* servers this needs to be solved differently.
*/
if (sock_owned_by_user(sk))
NET_INC_STATS_BH(net, LINUX_MIB_LOCKDROPPEDICMPS);
if (sk->sk_state == DCCP_CLOSED)
goto out;
dp = dccp_sk(sk);
seq = dccp_hdr_seq(dh);
if ((1 << sk->sk_state) & ~(DCCPF_REQUESTING | DCCPF_LISTEN) &&
!between48(seq, dp->dccps_awl, dp->dccps_awh)) {
NET_INC_STATS_BH(net, LINUX_MIB_OUTOFWINDOWICMPS);
goto out;
}
switch (type) {
case ICMP_SOURCE_QUENCH:
/* Just silently ignore these. */
goto out;
case ICMP_PARAMETERPROB:
err = EPROTO;
break;
case ICMP_DEST_UNREACH:
if (code > NR_ICMP_UNREACH)
goto out;
if (code == ICMP_FRAG_NEEDED) { /* PMTU discovery (RFC1191) */
if (!sock_owned_by_user(sk))
dccp_do_pmtu_discovery(sk, iph, info);
goto out;
}
err = icmp_err_convert[code].errno;
break;
case ICMP_TIME_EXCEEDED:
err = EHOSTUNREACH;
break;
default:
goto out;
}
switch (sk->sk_state) {
struct request_sock *req , **prev;
case DCCP_LISTEN:
if (sock_owned_by_user(sk))
goto out;
req = inet_csk_search_req(sk, &prev, dh->dccph_dport,
iph->daddr, iph->saddr);
if (!req)
goto out;
/*
* ICMPs are not backlogged, hence we cannot get an established
* socket here.
*/
WARN_ON(req->sk);
if (seq != dccp_rsk(req)->dreq_iss) {
NET_INC_STATS_BH(net, LINUX_MIB_OUTOFWINDOWICMPS);
goto out;
}
/*
* Still in RESPOND, just remove it silently.
* There is no good way to pass the error to the newly
* created socket, and POSIX does not want network
* errors returned from accept().
*/
inet_csk_reqsk_queue_drop(sk, req, prev);
goto out;
case DCCP_REQUESTING:
case DCCP_RESPOND:
if (!sock_owned_by_user(sk)) {
DCCP_INC_STATS_BH(DCCP_MIB_ATTEMPTFAILS);
sk->sk_err = err;
sk->sk_error_report(sk);
dccp_done(sk);
} else
sk->sk_err_soft = err;
goto out;
}
/* If we've already connected we will keep trying
* until we time out, or the user gives up.
*
* rfc1122 4.2.3.9 allows to consider as hard errors
* only PROTO_UNREACH and PORT_UNREACH (well, FRAG_FAILED too,
* but it is obsoleted by pmtu discovery).
*
* Note, that in modern internet, where routing is unreliable
* and in each dark corner broken firewalls sit, sending random
* errors ordered by their masters even this two messages finally lose
* their original sense (even Linux sends invalid PORT_UNREACHs)
*
* Now we are in compliance with RFCs.
* --ANK (980905)
*/
inet = inet_sk(sk);
if (!sock_owned_by_user(sk) && inet->recverr) {
sk->sk_err = err;
sk->sk_error_report(sk);
} else /* Only an error on timeout */
sk->sk_err_soft = err;
out:
bh_unlock_sock(sk);
sock_put(sk);
}
| @@ -48,6 +48,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
struct flowi4 fl4;
struct rtable *rt;
int err;
+ struct ip_options_rcu *inet_opt;
dp->dccps_role = DCCP_ROLE_CLIENT;
@@ -58,10 +59,13 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -EAFNOSUPPORT;
nexthop = daddr = usin->sin_addr.s_addr;
- if (inet->opt != NULL && inet->opt->srr) {
+
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt != NULL && inet_opt->opt.srr) {
if (daddr == 0)
return -EINVAL;
- nexthop = inet->opt->faddr;
+ nexthop = inet_opt->opt.faddr;
}
orig_sport = inet->inet_sport;
@@ -78,7 +82,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -ENETUNREACH;
}
- if (inet->opt == NULL || !inet->opt->srr)
+ if (inet_opt == NULL || !inet_opt->opt.srr)
daddr = rt->rt_dst;
if (inet->inet_saddr == 0)
@@ -89,8 +93,8 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr = daddr;
inet_csk(sk)->icsk_ext_hdr_len = 0;
- if (inet->opt != NULL)
- inet_csk(sk)->icsk_ext_hdr_len = inet->opt->optlen;
+ if (inet_opt)
+ inet_csk(sk)->icsk_ext_hdr_len = inet_opt->opt.optlen;
/*
* Socket identity is still unknown (sport may be zero).
* However we set state to DCCP_REQUESTING and not releasing socket
@@ -405,7 +409,7 @@ struct sock *dccp_v4_request_recv_sock(struct sock *sk, struct sk_buff *skb,
newinet->inet_daddr = ireq->rmt_addr;
newinet->inet_rcv_saddr = ireq->loc_addr;
newinet->inet_saddr = ireq->loc_addr;
- newinet->opt = ireq->opt;
+ newinet->inet_opt = ireq->opt;
ireq->opt = NULL;
newinet->mc_index = inet_iif(skb);
newinet->mc_ttl = ip_hdr(skb)->ttl; | CWE-362 | null | null |
15,012 | static void __exit dccp_v4_exit(void)
{
unregister_pernet_subsys(&dccp_v4_ops);
inet_unregister_protosw(&dccp_v4_protosw);
inet_del_protocol(&dccp_v4_protocol, IPPROTO_DCCP);
proto_unregister(&dccp_v4_prot);
}
| DoS | 0 | static void __exit dccp_v4_exit(void)
{
unregister_pernet_subsys(&dccp_v4_ops);
inet_unregister_protosw(&dccp_v4_protosw);
inet_del_protocol(&dccp_v4_protocol, IPPROTO_DCCP);
proto_unregister(&dccp_v4_prot);
}
| @@ -48,6 +48,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
struct flowi4 fl4;
struct rtable *rt;
int err;
+ struct ip_options_rcu *inet_opt;
dp->dccps_role = DCCP_ROLE_CLIENT;
@@ -58,10 +59,13 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -EAFNOSUPPORT;
nexthop = daddr = usin->sin_addr.s_addr;
- if (inet->opt != NULL && inet->opt->srr) {
+
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt != NULL && inet_opt->opt.srr) {
if (daddr == 0)
return -EINVAL;
- nexthop = inet->opt->faddr;
+ nexthop = inet_opt->opt.faddr;
}
orig_sport = inet->inet_sport;
@@ -78,7 +82,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -ENETUNREACH;
}
- if (inet->opt == NULL || !inet->opt->srr)
+ if (inet_opt == NULL || !inet_opt->opt.srr)
daddr = rt->rt_dst;
if (inet->inet_saddr == 0)
@@ -89,8 +93,8 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr = daddr;
inet_csk(sk)->icsk_ext_hdr_len = 0;
- if (inet->opt != NULL)
- inet_csk(sk)->icsk_ext_hdr_len = inet->opt->optlen;
+ if (inet_opt)
+ inet_csk(sk)->icsk_ext_hdr_len = inet_opt->opt.optlen;
/*
* Socket identity is still unknown (sport may be zero).
* However we set state to DCCP_REQUESTING and not releasing socket
@@ -405,7 +409,7 @@ struct sock *dccp_v4_request_recv_sock(struct sock *sk, struct sk_buff *skb,
newinet->inet_daddr = ireq->rmt_addr;
newinet->inet_rcv_saddr = ireq->loc_addr;
newinet->inet_saddr = ireq->loc_addr;
- newinet->opt = ireq->opt;
+ newinet->inet_opt = ireq->opt;
ireq->opt = NULL;
newinet->mc_index = inet_iif(skb);
newinet->mc_ttl = ip_hdr(skb)->ttl; | CWE-362 | null | null |
15,013 | static void __net_exit dccp_v4_exit_net(struct net *net)
{
inet_ctl_sock_destroy(net->dccp.v4_ctl_sk);
}
| DoS | 0 | static void __net_exit dccp_v4_exit_net(struct net *net)
{
inet_ctl_sock_destroy(net->dccp.v4_ctl_sk);
}
| @@ -48,6 +48,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
struct flowi4 fl4;
struct rtable *rt;
int err;
+ struct ip_options_rcu *inet_opt;
dp->dccps_role = DCCP_ROLE_CLIENT;
@@ -58,10 +59,13 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -EAFNOSUPPORT;
nexthop = daddr = usin->sin_addr.s_addr;
- if (inet->opt != NULL && inet->opt->srr) {
+
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt != NULL && inet_opt->opt.srr) {
if (daddr == 0)
return -EINVAL;
- nexthop = inet->opt->faddr;
+ nexthop = inet_opt->opt.faddr;
}
orig_sport = inet->inet_sport;
@@ -78,7 +82,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -ENETUNREACH;
}
- if (inet->opt == NULL || !inet->opt->srr)
+ if (inet_opt == NULL || !inet_opt->opt.srr)
daddr = rt->rt_dst;
if (inet->inet_saddr == 0)
@@ -89,8 +93,8 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr = daddr;
inet_csk(sk)->icsk_ext_hdr_len = 0;
- if (inet->opt != NULL)
- inet_csk(sk)->icsk_ext_hdr_len = inet->opt->optlen;
+ if (inet_opt)
+ inet_csk(sk)->icsk_ext_hdr_len = inet_opt->opt.optlen;
/*
* Socket identity is still unknown (sport may be zero).
* However we set state to DCCP_REQUESTING and not releasing socket
@@ -405,7 +409,7 @@ struct sock *dccp_v4_request_recv_sock(struct sock *sk, struct sk_buff *skb,
newinet->inet_daddr = ireq->rmt_addr;
newinet->inet_rcv_saddr = ireq->loc_addr;
newinet->inet_saddr = ireq->loc_addr;
- newinet->opt = ireq->opt;
+ newinet->inet_opt = ireq->opt;
ireq->opt = NULL;
newinet->mc_index = inet_iif(skb);
newinet->mc_ttl = ip_hdr(skb)->ttl; | CWE-362 | null | null |
15,014 | static int __init dccp_v4_init(void)
{
int err = proto_register(&dccp_v4_prot, 1);
if (err != 0)
goto out;
err = inet_add_protocol(&dccp_v4_protocol, IPPROTO_DCCP);
if (err != 0)
goto out_proto_unregister;
inet_register_protosw(&dccp_v4_protosw);
err = register_pernet_subsys(&dccp_v4_ops);
if (err)
goto out_destroy_ctl_sock;
out:
return err;
out_destroy_ctl_sock:
inet_unregister_protosw(&dccp_v4_protosw);
inet_del_protocol(&dccp_v4_protocol, IPPROTO_DCCP);
out_proto_unregister:
proto_unregister(&dccp_v4_prot);
goto out;
}
| DoS | 0 | static int __init dccp_v4_init(void)
{
int err = proto_register(&dccp_v4_prot, 1);
if (err != 0)
goto out;
err = inet_add_protocol(&dccp_v4_protocol, IPPROTO_DCCP);
if (err != 0)
goto out_proto_unregister;
inet_register_protosw(&dccp_v4_protosw);
err = register_pernet_subsys(&dccp_v4_ops);
if (err)
goto out_destroy_ctl_sock;
out:
return err;
out_destroy_ctl_sock:
inet_unregister_protosw(&dccp_v4_protosw);
inet_del_protocol(&dccp_v4_protocol, IPPROTO_DCCP);
out_proto_unregister:
proto_unregister(&dccp_v4_prot);
goto out;
}
| @@ -48,6 +48,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
struct flowi4 fl4;
struct rtable *rt;
int err;
+ struct ip_options_rcu *inet_opt;
dp->dccps_role = DCCP_ROLE_CLIENT;
@@ -58,10 +59,13 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -EAFNOSUPPORT;
nexthop = daddr = usin->sin_addr.s_addr;
- if (inet->opt != NULL && inet->opt->srr) {
+
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt != NULL && inet_opt->opt.srr) {
if (daddr == 0)
return -EINVAL;
- nexthop = inet->opt->faddr;
+ nexthop = inet_opt->opt.faddr;
}
orig_sport = inet->inet_sport;
@@ -78,7 +82,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -ENETUNREACH;
}
- if (inet->opt == NULL || !inet->opt->srr)
+ if (inet_opt == NULL || !inet_opt->opt.srr)
daddr = rt->rt_dst;
if (inet->inet_saddr == 0)
@@ -89,8 +93,8 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr = daddr;
inet_csk(sk)->icsk_ext_hdr_len = 0;
- if (inet->opt != NULL)
- inet_csk(sk)->icsk_ext_hdr_len = inet->opt->optlen;
+ if (inet_opt)
+ inet_csk(sk)->icsk_ext_hdr_len = inet_opt->opt.optlen;
/*
* Socket identity is still unknown (sport may be zero).
* However we set state to DCCP_REQUESTING and not releasing socket
@@ -405,7 +409,7 @@ struct sock *dccp_v4_request_recv_sock(struct sock *sk, struct sk_buff *skb,
newinet->inet_daddr = ireq->rmt_addr;
newinet->inet_rcv_saddr = ireq->loc_addr;
newinet->inet_saddr = ireq->loc_addr;
- newinet->opt = ireq->opt;
+ newinet->inet_opt = ireq->opt;
ireq->opt = NULL;
newinet->mc_index = inet_iif(skb);
newinet->mc_ttl = ip_hdr(skb)->ttl; | CWE-362 | null | null |
15,015 | static int __net_init dccp_v4_init_net(struct net *net)
{
if (dccp_hashinfo.bhash == NULL)
return -ESOCKTNOSUPPORT;
return inet_ctl_sock_create(&net->dccp.v4_ctl_sk, PF_INET,
SOCK_DCCP, IPPROTO_DCCP, net);
}
| DoS | 0 | static int __net_init dccp_v4_init_net(struct net *net)
{
if (dccp_hashinfo.bhash == NULL)
return -ESOCKTNOSUPPORT;
return inet_ctl_sock_create(&net->dccp.v4_ctl_sk, PF_INET,
SOCK_DCCP, IPPROTO_DCCP, net);
}
| @@ -48,6 +48,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
struct flowi4 fl4;
struct rtable *rt;
int err;
+ struct ip_options_rcu *inet_opt;
dp->dccps_role = DCCP_ROLE_CLIENT;
@@ -58,10 +59,13 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -EAFNOSUPPORT;
nexthop = daddr = usin->sin_addr.s_addr;
- if (inet->opt != NULL && inet->opt->srr) {
+
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt != NULL && inet_opt->opt.srr) {
if (daddr == 0)
return -EINVAL;
- nexthop = inet->opt->faddr;
+ nexthop = inet_opt->opt.faddr;
}
orig_sport = inet->inet_sport;
@@ -78,7 +82,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -ENETUNREACH;
}
- if (inet->opt == NULL || !inet->opt->srr)
+ if (inet_opt == NULL || !inet_opt->opt.srr)
daddr = rt->rt_dst;
if (inet->inet_saddr == 0)
@@ -89,8 +93,8 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr = daddr;
inet_csk(sk)->icsk_ext_hdr_len = 0;
- if (inet->opt != NULL)
- inet_csk(sk)->icsk_ext_hdr_len = inet->opt->optlen;
+ if (inet_opt)
+ inet_csk(sk)->icsk_ext_hdr_len = inet_opt->opt.optlen;
/*
* Socket identity is still unknown (sport may be zero).
* However we set state to DCCP_REQUESTING and not releasing socket
@@ -405,7 +409,7 @@ struct sock *dccp_v4_request_recv_sock(struct sock *sk, struct sk_buff *skb,
newinet->inet_daddr = ireq->rmt_addr;
newinet->inet_rcv_saddr = ireq->loc_addr;
newinet->inet_saddr = ireq->loc_addr;
- newinet->opt = ireq->opt;
+ newinet->inet_opt = ireq->opt;
ireq->opt = NULL;
newinet->mc_index = inet_iif(skb);
newinet->mc_ttl = ip_hdr(skb)->ttl; | CWE-362 | null | null |
15,016 | static inline u64 dccp_v4_init_sequence(const struct sk_buff *skb)
{
return secure_dccp_sequence_number(ip_hdr(skb)->daddr,
ip_hdr(skb)->saddr,
dccp_hdr(skb)->dccph_dport,
dccp_hdr(skb)->dccph_sport);
}
| DoS | 0 | static inline u64 dccp_v4_init_sequence(const struct sk_buff *skb)
{
return secure_dccp_sequence_number(ip_hdr(skb)->daddr,
ip_hdr(skb)->saddr,
dccp_hdr(skb)->dccph_dport,
dccp_hdr(skb)->dccph_sport);
}
| @@ -48,6 +48,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
struct flowi4 fl4;
struct rtable *rt;
int err;
+ struct ip_options_rcu *inet_opt;
dp->dccps_role = DCCP_ROLE_CLIENT;
@@ -58,10 +59,13 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -EAFNOSUPPORT;
nexthop = daddr = usin->sin_addr.s_addr;
- if (inet->opt != NULL && inet->opt->srr) {
+
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt != NULL && inet_opt->opt.srr) {
if (daddr == 0)
return -EINVAL;
- nexthop = inet->opt->faddr;
+ nexthop = inet_opt->opt.faddr;
}
orig_sport = inet->inet_sport;
@@ -78,7 +82,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -ENETUNREACH;
}
- if (inet->opt == NULL || !inet->opt->srr)
+ if (inet_opt == NULL || !inet_opt->opt.srr)
daddr = rt->rt_dst;
if (inet->inet_saddr == 0)
@@ -89,8 +93,8 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr = daddr;
inet_csk(sk)->icsk_ext_hdr_len = 0;
- if (inet->opt != NULL)
- inet_csk(sk)->icsk_ext_hdr_len = inet->opt->optlen;
+ if (inet_opt)
+ inet_csk(sk)->icsk_ext_hdr_len = inet_opt->opt.optlen;
/*
* Socket identity is still unknown (sport may be zero).
* However we set state to DCCP_REQUESTING and not releasing socket
@@ -405,7 +409,7 @@ struct sock *dccp_v4_request_recv_sock(struct sock *sk, struct sk_buff *skb,
newinet->inet_daddr = ireq->rmt_addr;
newinet->inet_rcv_saddr = ireq->loc_addr;
newinet->inet_saddr = ireq->loc_addr;
- newinet->opt = ireq->opt;
+ newinet->inet_opt = ireq->opt;
ireq->opt = NULL;
newinet->mc_index = inet_iif(skb);
newinet->mc_ttl = ip_hdr(skb)->ttl; | CWE-362 | null | null |
15,017 | static int dccp_v4_init_sock(struct sock *sk)
{
static __u8 dccp_v4_ctl_sock_initialized;
int err = dccp_init_sock(sk, dccp_v4_ctl_sock_initialized);
if (err == 0) {
if (unlikely(!dccp_v4_ctl_sock_initialized))
dccp_v4_ctl_sock_initialized = 1;
inet_csk(sk)->icsk_af_ops = &dccp_ipv4_af_ops;
}
return err;
}
| DoS | 0 | static int dccp_v4_init_sock(struct sock *sk)
{
static __u8 dccp_v4_ctl_sock_initialized;
int err = dccp_init_sock(sk, dccp_v4_ctl_sock_initialized);
if (err == 0) {
if (unlikely(!dccp_v4_ctl_sock_initialized))
dccp_v4_ctl_sock_initialized = 1;
inet_csk(sk)->icsk_af_ops = &dccp_ipv4_af_ops;
}
return err;
}
| @@ -48,6 +48,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
struct flowi4 fl4;
struct rtable *rt;
int err;
+ struct ip_options_rcu *inet_opt;
dp->dccps_role = DCCP_ROLE_CLIENT;
@@ -58,10 +59,13 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -EAFNOSUPPORT;
nexthop = daddr = usin->sin_addr.s_addr;
- if (inet->opt != NULL && inet->opt->srr) {
+
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt != NULL && inet_opt->opt.srr) {
if (daddr == 0)
return -EINVAL;
- nexthop = inet->opt->faddr;
+ nexthop = inet_opt->opt.faddr;
}
orig_sport = inet->inet_sport;
@@ -78,7 +82,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -ENETUNREACH;
}
- if (inet->opt == NULL || !inet->opt->srr)
+ if (inet_opt == NULL || !inet_opt->opt.srr)
daddr = rt->rt_dst;
if (inet->inet_saddr == 0)
@@ -89,8 +93,8 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr = daddr;
inet_csk(sk)->icsk_ext_hdr_len = 0;
- if (inet->opt != NULL)
- inet_csk(sk)->icsk_ext_hdr_len = inet->opt->optlen;
+ if (inet_opt)
+ inet_csk(sk)->icsk_ext_hdr_len = inet_opt->opt.optlen;
/*
* Socket identity is still unknown (sport may be zero).
* However we set state to DCCP_REQUESTING and not releasing socket
@@ -405,7 +409,7 @@ struct sock *dccp_v4_request_recv_sock(struct sock *sk, struct sk_buff *skb,
newinet->inet_daddr = ireq->rmt_addr;
newinet->inet_rcv_saddr = ireq->loc_addr;
newinet->inet_saddr = ireq->loc_addr;
- newinet->opt = ireq->opt;
+ newinet->inet_opt = ireq->opt;
ireq->opt = NULL;
newinet->mc_index = inet_iif(skb);
newinet->mc_ttl = ip_hdr(skb)->ttl; | CWE-362 | null | null |
15,018 | static struct dst_entry* dccp_v4_route_skb(struct net *net, struct sock *sk,
struct sk_buff *skb)
{
struct rtable *rt;
struct flowi4 fl4 = {
.flowi4_oif = skb_rtable(skb)->rt_iif,
.daddr = ip_hdr(skb)->saddr,
.saddr = ip_hdr(skb)->daddr,
.flowi4_tos = RT_CONN_FLAGS(sk),
.flowi4_proto = sk->sk_protocol,
.fl4_sport = dccp_hdr(skb)->dccph_dport,
.fl4_dport = dccp_hdr(skb)->dccph_sport,
};
security_skb_classify_flow(skb, flowi4_to_flowi(&fl4));
rt = ip_route_output_flow(net, &fl4, sk);
if (IS_ERR(rt)) {
IP_INC_STATS_BH(net, IPSTATS_MIB_OUTNOROUTES);
return NULL;
}
return &rt->dst;
}
| DoS | 0 | static struct dst_entry* dccp_v4_route_skb(struct net *net, struct sock *sk,
struct sk_buff *skb)
{
struct rtable *rt;
struct flowi4 fl4 = {
.flowi4_oif = skb_rtable(skb)->rt_iif,
.daddr = ip_hdr(skb)->saddr,
.saddr = ip_hdr(skb)->daddr,
.flowi4_tos = RT_CONN_FLAGS(sk),
.flowi4_proto = sk->sk_protocol,
.fl4_sport = dccp_hdr(skb)->dccph_dport,
.fl4_dport = dccp_hdr(skb)->dccph_sport,
};
security_skb_classify_flow(skb, flowi4_to_flowi(&fl4));
rt = ip_route_output_flow(net, &fl4, sk);
if (IS_ERR(rt)) {
IP_INC_STATS_BH(net, IPSTATS_MIB_OUTNOROUTES);
return NULL;
}
return &rt->dst;
}
| @@ -48,6 +48,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
struct flowi4 fl4;
struct rtable *rt;
int err;
+ struct ip_options_rcu *inet_opt;
dp->dccps_role = DCCP_ROLE_CLIENT;
@@ -58,10 +59,13 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -EAFNOSUPPORT;
nexthop = daddr = usin->sin_addr.s_addr;
- if (inet->opt != NULL && inet->opt->srr) {
+
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt != NULL && inet_opt->opt.srr) {
if (daddr == 0)
return -EINVAL;
- nexthop = inet->opt->faddr;
+ nexthop = inet_opt->opt.faddr;
}
orig_sport = inet->inet_sport;
@@ -78,7 +82,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -ENETUNREACH;
}
- if (inet->opt == NULL || !inet->opt->srr)
+ if (inet_opt == NULL || !inet_opt->opt.srr)
daddr = rt->rt_dst;
if (inet->inet_saddr == 0)
@@ -89,8 +93,8 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr = daddr;
inet_csk(sk)->icsk_ext_hdr_len = 0;
- if (inet->opt != NULL)
- inet_csk(sk)->icsk_ext_hdr_len = inet->opt->optlen;
+ if (inet_opt)
+ inet_csk(sk)->icsk_ext_hdr_len = inet_opt->opt.optlen;
/*
* Socket identity is still unknown (sport may be zero).
* However we set state to DCCP_REQUESTING and not releasing socket
@@ -405,7 +409,7 @@ struct sock *dccp_v4_request_recv_sock(struct sock *sk, struct sk_buff *skb,
newinet->inet_daddr = ireq->rmt_addr;
newinet->inet_rcv_saddr = ireq->loc_addr;
newinet->inet_saddr = ireq->loc_addr;
- newinet->opt = ireq->opt;
+ newinet->inet_opt = ireq->opt;
ireq->opt = NULL;
newinet->mc_index = inet_iif(skb);
newinet->mc_ttl = ip_hdr(skb)->ttl; | CWE-362 | null | null |
15,019 | void dccp_v4_send_check(struct sock *sk, struct sk_buff *skb)
{
const struct inet_sock *inet = inet_sk(sk);
struct dccp_hdr *dh = dccp_hdr(skb);
dccp_csum_outgoing(skb);
dh->dccph_checksum = dccp_v4_csum_finish(skb,
inet->inet_saddr,
inet->inet_daddr);
}
| DoS | 0 | void dccp_v4_send_check(struct sock *sk, struct sk_buff *skb)
{
const struct inet_sock *inet = inet_sk(sk);
struct dccp_hdr *dh = dccp_hdr(skb);
dccp_csum_outgoing(skb);
dh->dccph_checksum = dccp_v4_csum_finish(skb,
inet->inet_saddr,
inet->inet_daddr);
}
| @@ -48,6 +48,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
struct flowi4 fl4;
struct rtable *rt;
int err;
+ struct ip_options_rcu *inet_opt;
dp->dccps_role = DCCP_ROLE_CLIENT;
@@ -58,10 +59,13 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -EAFNOSUPPORT;
nexthop = daddr = usin->sin_addr.s_addr;
- if (inet->opt != NULL && inet->opt->srr) {
+
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt != NULL && inet_opt->opt.srr) {
if (daddr == 0)
return -EINVAL;
- nexthop = inet->opt->faddr;
+ nexthop = inet_opt->opt.faddr;
}
orig_sport = inet->inet_sport;
@@ -78,7 +82,7 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
return -ENETUNREACH;
}
- if (inet->opt == NULL || !inet->opt->srr)
+ if (inet_opt == NULL || !inet_opt->opt.srr)
daddr = rt->rt_dst;
if (inet->inet_saddr == 0)
@@ -89,8 +93,8 @@ int dccp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->inet_daddr = daddr;
inet_csk(sk)->icsk_ext_hdr_len = 0;
- if (inet->opt != NULL)
- inet_csk(sk)->icsk_ext_hdr_len = inet->opt->optlen;
+ if (inet_opt)
+ inet_csk(sk)->icsk_ext_hdr_len = inet_opt->opt.optlen;
/*
* Socket identity is still unknown (sport may be zero).
* However we set state to DCCP_REQUESTING and not releasing socket
@@ -405,7 +409,7 @@ struct sock *dccp_v4_request_recv_sock(struct sock *sk, struct sk_buff *skb,
newinet->inet_daddr = ireq->rmt_addr;
newinet->inet_rcv_saddr = ireq->loc_addr;
newinet->inet_saddr = ireq->loc_addr;
- newinet->opt = ireq->opt;
+ newinet->inet_opt = ireq->opt;
ireq->opt = NULL;
newinet->mc_index = inet_iif(skb);
newinet->mc_ttl = ip_hdr(skb)->ttl; | CWE-362 | null | null |
15,020 | static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
int addr_len)
{
struct sockaddr_in6 *usin = (struct sockaddr_in6 *)uaddr;
struct inet_connection_sock *icsk = inet_csk(sk);
struct inet_sock *inet = inet_sk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
struct dccp_sock *dp = dccp_sk(sk);
struct in6_addr *saddr = NULL, *final_p, final;
struct flowi6 fl6;
struct dst_entry *dst;
int addr_type;
int err;
dp->dccps_role = DCCP_ROLE_CLIENT;
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
if (usin->sin6_family != AF_INET6)
return -EAFNOSUPPORT;
memset(&fl6, 0, sizeof(fl6));
if (np->sndflow) {
fl6.flowlabel = usin->sin6_flowinfo & IPV6_FLOWINFO_MASK;
IP6_ECN_flow_init(fl6.flowlabel);
if (fl6.flowlabel & IPV6_FLOWLABEL_MASK) {
struct ip6_flowlabel *flowlabel;
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (flowlabel == NULL)
return -EINVAL;
ipv6_addr_copy(&usin->sin6_addr, &flowlabel->dst);
fl6_sock_release(flowlabel);
}
}
/*
* connect() to INADDR_ANY means loopback (BSD'ism).
*/
if (ipv6_addr_any(&usin->sin6_addr))
usin->sin6_addr.s6_addr[15] = 1;
addr_type = ipv6_addr_type(&usin->sin6_addr);
if (addr_type & IPV6_ADDR_MULTICAST)
return -ENETUNREACH;
if (addr_type & IPV6_ADDR_LINKLOCAL) {
if (addr_len >= sizeof(struct sockaddr_in6) &&
usin->sin6_scope_id) {
/* If interface is set while binding, indices
* must coincide.
*/
if (sk->sk_bound_dev_if &&
sk->sk_bound_dev_if != usin->sin6_scope_id)
return -EINVAL;
sk->sk_bound_dev_if = usin->sin6_scope_id;
}
/* Connect to link-local address requires an interface */
if (!sk->sk_bound_dev_if)
return -EINVAL;
}
ipv6_addr_copy(&np->daddr, &usin->sin6_addr);
np->flow_label = fl6.flowlabel;
/*
* DCCP over IPv4
*/
if (addr_type == IPV6_ADDR_MAPPED) {
u32 exthdrlen = icsk->icsk_ext_hdr_len;
struct sockaddr_in sin;
SOCK_DEBUG(sk, "connect: ipv4 mapped\n");
if (__ipv6_only_sock(sk))
return -ENETUNREACH;
sin.sin_family = AF_INET;
sin.sin_port = usin->sin6_port;
sin.sin_addr.s_addr = usin->sin6_addr.s6_addr32[3];
icsk->icsk_af_ops = &dccp_ipv6_mapped;
sk->sk_backlog_rcv = dccp_v4_do_rcv;
err = dccp_v4_connect(sk, (struct sockaddr *)&sin, sizeof(sin));
if (err) {
icsk->icsk_ext_hdr_len = exthdrlen;
icsk->icsk_af_ops = &dccp_ipv6_af_ops;
sk->sk_backlog_rcv = dccp_v6_do_rcv;
goto failure;
}
ipv6_addr_set_v4mapped(inet->inet_saddr, &np->saddr);
ipv6_addr_set_v4mapped(inet->inet_rcv_saddr, &np->rcv_saddr);
return err;
}
if (!ipv6_addr_any(&np->rcv_saddr))
saddr = &np->rcv_saddr;
fl6.flowi6_proto = IPPROTO_DCCP;
ipv6_addr_copy(&fl6.daddr, &np->daddr);
ipv6_addr_copy(&fl6.saddr, saddr ? saddr : &np->saddr);
fl6.flowi6_oif = sk->sk_bound_dev_if;
fl6.fl6_dport = usin->sin6_port;
fl6.fl6_sport = inet->inet_sport;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
final_p = fl6_update_dst(&fl6, np->opt, &final);
dst = ip6_dst_lookup_flow(sk, &fl6, final_p, true);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
goto failure;
}
if (saddr == NULL) {
saddr = &fl6.saddr;
ipv6_addr_copy(&np->rcv_saddr, saddr);
}
/* set the source address */
ipv6_addr_copy(&np->saddr, saddr);
inet->inet_rcv_saddr = LOOPBACK4_IPV6;
__ip6_dst_store(sk, dst, NULL, NULL);
icsk->icsk_ext_hdr_len = 0;
if (np->opt != NULL)
icsk->icsk_ext_hdr_len = (np->opt->opt_flen +
np->opt->opt_nflen);
inet->inet_dport = usin->sin6_port;
dccp_set_state(sk, DCCP_REQUESTING);
err = inet6_hash_connect(&dccp_death_row, sk);
if (err)
goto late_failure;
dp->dccps_iss = secure_dccpv6_sequence_number(np->saddr.s6_addr32,
np->daddr.s6_addr32,
inet->inet_sport,
inet->inet_dport);
err = dccp_connect(sk);
if (err)
goto late_failure;
return 0;
late_failure:
dccp_set_state(sk, DCCP_CLOSED);
__sk_dst_reset(sk);
failure:
inet->inet_dport = 0;
sk->sk_route_caps = 0;
return err;
}
| DoS | 0 | static int dccp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
int addr_len)
{
struct sockaddr_in6 *usin = (struct sockaddr_in6 *)uaddr;
struct inet_connection_sock *icsk = inet_csk(sk);
struct inet_sock *inet = inet_sk(sk);
struct ipv6_pinfo *np = inet6_sk(sk);
struct dccp_sock *dp = dccp_sk(sk);
struct in6_addr *saddr = NULL, *final_p, final;
struct flowi6 fl6;
struct dst_entry *dst;
int addr_type;
int err;
dp->dccps_role = DCCP_ROLE_CLIENT;
if (addr_len < SIN6_LEN_RFC2133)
return -EINVAL;
if (usin->sin6_family != AF_INET6)
return -EAFNOSUPPORT;
memset(&fl6, 0, sizeof(fl6));
if (np->sndflow) {
fl6.flowlabel = usin->sin6_flowinfo & IPV6_FLOWINFO_MASK;
IP6_ECN_flow_init(fl6.flowlabel);
if (fl6.flowlabel & IPV6_FLOWLABEL_MASK) {
struct ip6_flowlabel *flowlabel;
flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
if (flowlabel == NULL)
return -EINVAL;
ipv6_addr_copy(&usin->sin6_addr, &flowlabel->dst);
fl6_sock_release(flowlabel);
}
}
/*
* connect() to INADDR_ANY means loopback (BSD'ism).
*/
if (ipv6_addr_any(&usin->sin6_addr))
usin->sin6_addr.s6_addr[15] = 1;
addr_type = ipv6_addr_type(&usin->sin6_addr);
if (addr_type & IPV6_ADDR_MULTICAST)
return -ENETUNREACH;
if (addr_type & IPV6_ADDR_LINKLOCAL) {
if (addr_len >= sizeof(struct sockaddr_in6) &&
usin->sin6_scope_id) {
/* If interface is set while binding, indices
* must coincide.
*/
if (sk->sk_bound_dev_if &&
sk->sk_bound_dev_if != usin->sin6_scope_id)
return -EINVAL;
sk->sk_bound_dev_if = usin->sin6_scope_id;
}
/* Connect to link-local address requires an interface */
if (!sk->sk_bound_dev_if)
return -EINVAL;
}
ipv6_addr_copy(&np->daddr, &usin->sin6_addr);
np->flow_label = fl6.flowlabel;
/*
* DCCP over IPv4
*/
if (addr_type == IPV6_ADDR_MAPPED) {
u32 exthdrlen = icsk->icsk_ext_hdr_len;
struct sockaddr_in sin;
SOCK_DEBUG(sk, "connect: ipv4 mapped\n");
if (__ipv6_only_sock(sk))
return -ENETUNREACH;
sin.sin_family = AF_INET;
sin.sin_port = usin->sin6_port;
sin.sin_addr.s_addr = usin->sin6_addr.s6_addr32[3];
icsk->icsk_af_ops = &dccp_ipv6_mapped;
sk->sk_backlog_rcv = dccp_v4_do_rcv;
err = dccp_v4_connect(sk, (struct sockaddr *)&sin, sizeof(sin));
if (err) {
icsk->icsk_ext_hdr_len = exthdrlen;
icsk->icsk_af_ops = &dccp_ipv6_af_ops;
sk->sk_backlog_rcv = dccp_v6_do_rcv;
goto failure;
}
ipv6_addr_set_v4mapped(inet->inet_saddr, &np->saddr);
ipv6_addr_set_v4mapped(inet->inet_rcv_saddr, &np->rcv_saddr);
return err;
}
if (!ipv6_addr_any(&np->rcv_saddr))
saddr = &np->rcv_saddr;
fl6.flowi6_proto = IPPROTO_DCCP;
ipv6_addr_copy(&fl6.daddr, &np->daddr);
ipv6_addr_copy(&fl6.saddr, saddr ? saddr : &np->saddr);
fl6.flowi6_oif = sk->sk_bound_dev_if;
fl6.fl6_dport = usin->sin6_port;
fl6.fl6_sport = inet->inet_sport;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
final_p = fl6_update_dst(&fl6, np->opt, &final);
dst = ip6_dst_lookup_flow(sk, &fl6, final_p, true);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
goto failure;
}
if (saddr == NULL) {
saddr = &fl6.saddr;
ipv6_addr_copy(&np->rcv_saddr, saddr);
}
/* set the source address */
ipv6_addr_copy(&np->saddr, saddr);
inet->inet_rcv_saddr = LOOPBACK4_IPV6;
__ip6_dst_store(sk, dst, NULL, NULL);
icsk->icsk_ext_hdr_len = 0;
if (np->opt != NULL)
icsk->icsk_ext_hdr_len = (np->opt->opt_flen +
np->opt->opt_nflen);
inet->inet_dport = usin->sin6_port;
dccp_set_state(sk, DCCP_REQUESTING);
err = inet6_hash_connect(&dccp_death_row, sk);
if (err)
goto late_failure;
dp->dccps_iss = secure_dccpv6_sequence_number(np->saddr.s6_addr32,
np->daddr.s6_addr32,
inet->inet_sport,
inet->inet_dport);
err = dccp_connect(sk);
if (err)
goto late_failure;
return 0;
late_failure:
dccp_set_state(sk, DCCP_CLOSED);
__sk_dst_reset(sk);
failure:
inet->inet_dport = 0;
sk->sk_route_caps = 0;
return err;
}
| @@ -573,7 +573,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
First: no IPv4 options.
*/
- newinet->opt = NULL;
+ newinet->inet_opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all; | CWE-362 | null | null |
15,021 | static inline __sum16 dccp_v6_csum_finish(struct sk_buff *skb,
const struct in6_addr *saddr,
const struct in6_addr *daddr)
{
return csum_ipv6_magic(saddr, daddr, skb->len, IPPROTO_DCCP, skb->csum);
}
| DoS | 0 | static inline __sum16 dccp_v6_csum_finish(struct sk_buff *skb,
const struct in6_addr *saddr,
const struct in6_addr *daddr)
{
return csum_ipv6_magic(saddr, daddr, skb->len, IPPROTO_DCCP, skb->csum);
}
| @@ -573,7 +573,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
First: no IPv4 options.
*/
- newinet->opt = NULL;
+ newinet->inet_opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all; | CWE-362 | null | null |
15,022 | static void dccp_v6_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb)
{
const struct ipv6hdr *rxip6h;
struct sk_buff *skb;
struct flowi6 fl6;
struct net *net = dev_net(skb_dst(rxskb)->dev);
struct sock *ctl_sk = net->dccp.v6_ctl_sk;
struct dst_entry *dst;
if (dccp_hdr(rxskb)->dccph_type == DCCP_PKT_RESET)
return;
if (!ipv6_unicast_destination(rxskb))
return;
skb = dccp_ctl_make_reset(ctl_sk, rxskb);
if (skb == NULL)
return;
rxip6h = ipv6_hdr(rxskb);
dccp_hdr(skb)->dccph_checksum = dccp_v6_csum_finish(skb, &rxip6h->saddr,
&rxip6h->daddr);
memset(&fl6, 0, sizeof(fl6));
ipv6_addr_copy(&fl6.daddr, &rxip6h->saddr);
ipv6_addr_copy(&fl6.saddr, &rxip6h->daddr);
fl6.flowi6_proto = IPPROTO_DCCP;
fl6.flowi6_oif = inet6_iif(rxskb);
fl6.fl6_dport = dccp_hdr(skb)->dccph_dport;
fl6.fl6_sport = dccp_hdr(skb)->dccph_sport;
security_skb_classify_flow(rxskb, flowi6_to_flowi(&fl6));
/* sk = NULL, but it is safe for now. RST socket required. */
dst = ip6_dst_lookup_flow(ctl_sk, &fl6, NULL, false);
if (!IS_ERR(dst)) {
skb_dst_set(skb, dst);
ip6_xmit(ctl_sk, skb, &fl6, NULL);
DCCP_INC_STATS_BH(DCCP_MIB_OUTSEGS);
DCCP_INC_STATS_BH(DCCP_MIB_OUTRSTS);
return;
}
kfree_skb(skb);
}
| DoS | 0 | static void dccp_v6_ctl_send_reset(struct sock *sk, struct sk_buff *rxskb)
{
const struct ipv6hdr *rxip6h;
struct sk_buff *skb;
struct flowi6 fl6;
struct net *net = dev_net(skb_dst(rxskb)->dev);
struct sock *ctl_sk = net->dccp.v6_ctl_sk;
struct dst_entry *dst;
if (dccp_hdr(rxskb)->dccph_type == DCCP_PKT_RESET)
return;
if (!ipv6_unicast_destination(rxskb))
return;
skb = dccp_ctl_make_reset(ctl_sk, rxskb);
if (skb == NULL)
return;
rxip6h = ipv6_hdr(rxskb);
dccp_hdr(skb)->dccph_checksum = dccp_v6_csum_finish(skb, &rxip6h->saddr,
&rxip6h->daddr);
memset(&fl6, 0, sizeof(fl6));
ipv6_addr_copy(&fl6.daddr, &rxip6h->saddr);
ipv6_addr_copy(&fl6.saddr, &rxip6h->daddr);
fl6.flowi6_proto = IPPROTO_DCCP;
fl6.flowi6_oif = inet6_iif(rxskb);
fl6.fl6_dport = dccp_hdr(skb)->dccph_dport;
fl6.fl6_sport = dccp_hdr(skb)->dccph_sport;
security_skb_classify_flow(rxskb, flowi6_to_flowi(&fl6));
/* sk = NULL, but it is safe for now. RST socket required. */
dst = ip6_dst_lookup_flow(ctl_sk, &fl6, NULL, false);
if (!IS_ERR(dst)) {
skb_dst_set(skb, dst);
ip6_xmit(ctl_sk, skb, &fl6, NULL);
DCCP_INC_STATS_BH(DCCP_MIB_OUTSEGS);
DCCP_INC_STATS_BH(DCCP_MIB_OUTRSTS);
return;
}
kfree_skb(skb);
}
| @@ -573,7 +573,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
First: no IPv4 options.
*/
- newinet->opt = NULL;
+ newinet->inet_opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all; | CWE-362 | null | null |
15,023 | static void dccp_v6_destroy_sock(struct sock *sk)
{
dccp_destroy_sock(sk);
inet6_destroy_sock(sk);
}
| DoS | 0 | static void dccp_v6_destroy_sock(struct sock *sk)
{
dccp_destroy_sock(sk);
inet6_destroy_sock(sk);
}
| @@ -573,7 +573,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
First: no IPv4 options.
*/
- newinet->opt = NULL;
+ newinet->inet_opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all; | CWE-362 | null | null |
15,024 | static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
u8 type, u8 code, int offset, __be32 info)
{
const struct ipv6hdr *hdr = (const struct ipv6hdr *)skb->data;
const struct dccp_hdr *dh = (struct dccp_hdr *)(skb->data + offset);
struct dccp_sock *dp;
struct ipv6_pinfo *np;
struct sock *sk;
int err;
__u64 seq;
struct net *net = dev_net(skb->dev);
if (skb->len < offset + sizeof(*dh) ||
skb->len < offset + __dccp_basic_hdr_len(dh)) {
ICMP6_INC_STATS_BH(net, __in6_dev_get(skb->dev),
ICMP6_MIB_INERRORS);
return;
}
sk = inet6_lookup(net, &dccp_hashinfo,
&hdr->daddr, dh->dccph_dport,
&hdr->saddr, dh->dccph_sport, inet6_iif(skb));
if (sk == NULL) {
ICMP6_INC_STATS_BH(net, __in6_dev_get(skb->dev),
ICMP6_MIB_INERRORS);
return;
}
if (sk->sk_state == DCCP_TIME_WAIT) {
inet_twsk_put(inet_twsk(sk));
return;
}
bh_lock_sock(sk);
if (sock_owned_by_user(sk))
NET_INC_STATS_BH(net, LINUX_MIB_LOCKDROPPEDICMPS);
if (sk->sk_state == DCCP_CLOSED)
goto out;
dp = dccp_sk(sk);
seq = dccp_hdr_seq(dh);
if ((1 << sk->sk_state) & ~(DCCPF_REQUESTING | DCCPF_LISTEN) &&
!between48(seq, dp->dccps_awl, dp->dccps_awh)) {
NET_INC_STATS_BH(net, LINUX_MIB_OUTOFWINDOWICMPS);
goto out;
}
np = inet6_sk(sk);
if (type == ICMPV6_PKT_TOOBIG) {
struct dst_entry *dst = NULL;
if (sock_owned_by_user(sk))
goto out;
if ((1 << sk->sk_state) & (DCCPF_LISTEN | DCCPF_CLOSED))
goto out;
/* icmp should have updated the destination cache entry */
dst = __sk_dst_check(sk, np->dst_cookie);
if (dst == NULL) {
struct inet_sock *inet = inet_sk(sk);
struct flowi6 fl6;
/* BUGGG_FUTURE: Again, it is not clear how
to handle rthdr case. Ignore this complexity
for now.
*/
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_proto = IPPROTO_DCCP;
ipv6_addr_copy(&fl6.daddr, &np->daddr);
ipv6_addr_copy(&fl6.saddr, &np->saddr);
fl6.flowi6_oif = sk->sk_bound_dev_if;
fl6.fl6_dport = inet->inet_dport;
fl6.fl6_sport = inet->inet_sport;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
dst = ip6_dst_lookup_flow(sk, &fl6, NULL, false);
if (IS_ERR(dst)) {
sk->sk_err_soft = -PTR_ERR(dst);
goto out;
}
} else
dst_hold(dst);
if (inet_csk(sk)->icsk_pmtu_cookie > dst_mtu(dst)) {
dccp_sync_mss(sk, dst_mtu(dst));
} /* else let the usual retransmit timer handle it */
dst_release(dst);
goto out;
}
icmpv6_err_convert(type, code, &err);
/* Might be for an request_sock */
switch (sk->sk_state) {
struct request_sock *req, **prev;
case DCCP_LISTEN:
if (sock_owned_by_user(sk))
goto out;
req = inet6_csk_search_req(sk, &prev, dh->dccph_dport,
&hdr->daddr, &hdr->saddr,
inet6_iif(skb));
if (req == NULL)
goto out;
/*
* ICMPs are not backlogged, hence we cannot get an established
* socket here.
*/
WARN_ON(req->sk != NULL);
if (seq != dccp_rsk(req)->dreq_iss) {
NET_INC_STATS_BH(net, LINUX_MIB_OUTOFWINDOWICMPS);
goto out;
}
inet_csk_reqsk_queue_drop(sk, req, prev);
goto out;
case DCCP_REQUESTING:
case DCCP_RESPOND: /* Cannot happen.
It can, it SYNs are crossed. --ANK */
if (!sock_owned_by_user(sk)) {
DCCP_INC_STATS_BH(DCCP_MIB_ATTEMPTFAILS);
sk->sk_err = err;
/*
* Wake people up to see the error
* (see connect in sock.c)
*/
sk->sk_error_report(sk);
dccp_done(sk);
} else
sk->sk_err_soft = err;
goto out;
}
if (!sock_owned_by_user(sk) && np->recverr) {
sk->sk_err = err;
sk->sk_error_report(sk);
} else
sk->sk_err_soft = err;
out:
bh_unlock_sock(sk);
sock_put(sk);
}
| DoS | 0 | static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
u8 type, u8 code, int offset, __be32 info)
{
const struct ipv6hdr *hdr = (const struct ipv6hdr *)skb->data;
const struct dccp_hdr *dh = (struct dccp_hdr *)(skb->data + offset);
struct dccp_sock *dp;
struct ipv6_pinfo *np;
struct sock *sk;
int err;
__u64 seq;
struct net *net = dev_net(skb->dev);
if (skb->len < offset + sizeof(*dh) ||
skb->len < offset + __dccp_basic_hdr_len(dh)) {
ICMP6_INC_STATS_BH(net, __in6_dev_get(skb->dev),
ICMP6_MIB_INERRORS);
return;
}
sk = inet6_lookup(net, &dccp_hashinfo,
&hdr->daddr, dh->dccph_dport,
&hdr->saddr, dh->dccph_sport, inet6_iif(skb));
if (sk == NULL) {
ICMP6_INC_STATS_BH(net, __in6_dev_get(skb->dev),
ICMP6_MIB_INERRORS);
return;
}
if (sk->sk_state == DCCP_TIME_WAIT) {
inet_twsk_put(inet_twsk(sk));
return;
}
bh_lock_sock(sk);
if (sock_owned_by_user(sk))
NET_INC_STATS_BH(net, LINUX_MIB_LOCKDROPPEDICMPS);
if (sk->sk_state == DCCP_CLOSED)
goto out;
dp = dccp_sk(sk);
seq = dccp_hdr_seq(dh);
if ((1 << sk->sk_state) & ~(DCCPF_REQUESTING | DCCPF_LISTEN) &&
!between48(seq, dp->dccps_awl, dp->dccps_awh)) {
NET_INC_STATS_BH(net, LINUX_MIB_OUTOFWINDOWICMPS);
goto out;
}
np = inet6_sk(sk);
if (type == ICMPV6_PKT_TOOBIG) {
struct dst_entry *dst = NULL;
if (sock_owned_by_user(sk))
goto out;
if ((1 << sk->sk_state) & (DCCPF_LISTEN | DCCPF_CLOSED))
goto out;
/* icmp should have updated the destination cache entry */
dst = __sk_dst_check(sk, np->dst_cookie);
if (dst == NULL) {
struct inet_sock *inet = inet_sk(sk);
struct flowi6 fl6;
/* BUGGG_FUTURE: Again, it is not clear how
to handle rthdr case. Ignore this complexity
for now.
*/
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_proto = IPPROTO_DCCP;
ipv6_addr_copy(&fl6.daddr, &np->daddr);
ipv6_addr_copy(&fl6.saddr, &np->saddr);
fl6.flowi6_oif = sk->sk_bound_dev_if;
fl6.fl6_dport = inet->inet_dport;
fl6.fl6_sport = inet->inet_sport;
security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
dst = ip6_dst_lookup_flow(sk, &fl6, NULL, false);
if (IS_ERR(dst)) {
sk->sk_err_soft = -PTR_ERR(dst);
goto out;
}
} else
dst_hold(dst);
if (inet_csk(sk)->icsk_pmtu_cookie > dst_mtu(dst)) {
dccp_sync_mss(sk, dst_mtu(dst));
} /* else let the usual retransmit timer handle it */
dst_release(dst);
goto out;
}
icmpv6_err_convert(type, code, &err);
/* Might be for an request_sock */
switch (sk->sk_state) {
struct request_sock *req, **prev;
case DCCP_LISTEN:
if (sock_owned_by_user(sk))
goto out;
req = inet6_csk_search_req(sk, &prev, dh->dccph_dport,
&hdr->daddr, &hdr->saddr,
inet6_iif(skb));
if (req == NULL)
goto out;
/*
* ICMPs are not backlogged, hence we cannot get an established
* socket here.
*/
WARN_ON(req->sk != NULL);
if (seq != dccp_rsk(req)->dreq_iss) {
NET_INC_STATS_BH(net, LINUX_MIB_OUTOFWINDOWICMPS);
goto out;
}
inet_csk_reqsk_queue_drop(sk, req, prev);
goto out;
case DCCP_REQUESTING:
case DCCP_RESPOND: /* Cannot happen.
It can, it SYNs are crossed. --ANK */
if (!sock_owned_by_user(sk)) {
DCCP_INC_STATS_BH(DCCP_MIB_ATTEMPTFAILS);
sk->sk_err = err;
/*
* Wake people up to see the error
* (see connect in sock.c)
*/
sk->sk_error_report(sk);
dccp_done(sk);
} else
sk->sk_err_soft = err;
goto out;
}
if (!sock_owned_by_user(sk) && np->recverr) {
sk->sk_err = err;
sk->sk_error_report(sk);
} else
sk->sk_err_soft = err;
out:
bh_unlock_sock(sk);
sock_put(sk);
}
| @@ -573,7 +573,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
First: no IPv4 options.
*/
- newinet->opt = NULL;
+ newinet->inet_opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all; | CWE-362 | null | null |
15,025 | static void __exit dccp_v6_exit(void)
{
unregister_pernet_subsys(&dccp_v6_ops);
inet6_del_protocol(&dccp_v6_protocol, IPPROTO_DCCP);
inet6_unregister_protosw(&dccp_v6_protosw);
proto_unregister(&dccp_v6_prot);
}
| DoS | 0 | static void __exit dccp_v6_exit(void)
{
unregister_pernet_subsys(&dccp_v6_ops);
inet6_del_protocol(&dccp_v6_protocol, IPPROTO_DCCP);
inet6_unregister_protosw(&dccp_v6_protosw);
proto_unregister(&dccp_v6_prot);
}
| @@ -573,7 +573,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
First: no IPv4 options.
*/
- newinet->opt = NULL;
+ newinet->inet_opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all; | CWE-362 | null | null |
15,026 | static void __net_exit dccp_v6_exit_net(struct net *net)
{
inet_ctl_sock_destroy(net->dccp.v6_ctl_sk);
}
| DoS | 0 | static void __net_exit dccp_v6_exit_net(struct net *net)
{
inet_ctl_sock_destroy(net->dccp.v6_ctl_sk);
}
| @@ -573,7 +573,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
First: no IPv4 options.
*/
- newinet->opt = NULL;
+ newinet->inet_opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all; | CWE-362 | null | null |
15,027 | static int __net_init dccp_v6_init_net(struct net *net)
{
if (dccp_hashinfo.bhash == NULL)
return -ESOCKTNOSUPPORT;
return inet_ctl_sock_create(&net->dccp.v6_ctl_sk, PF_INET6,
SOCK_DCCP, IPPROTO_DCCP, net);
}
| DoS | 0 | static int __net_init dccp_v6_init_net(struct net *net)
{
if (dccp_hashinfo.bhash == NULL)
return -ESOCKTNOSUPPORT;
return inet_ctl_sock_create(&net->dccp.v6_ctl_sk, PF_INET6,
SOCK_DCCP, IPPROTO_DCCP, net);
}
| @@ -573,7 +573,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
First: no IPv4 options.
*/
- newinet->opt = NULL;
+ newinet->inet_opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all; | CWE-362 | null | null |
15,028 | static int dccp_v6_init_sock(struct sock *sk)
{
static __u8 dccp_v6_ctl_sock_initialized;
int err = dccp_init_sock(sk, dccp_v6_ctl_sock_initialized);
if (err == 0) {
if (unlikely(!dccp_v6_ctl_sock_initialized))
dccp_v6_ctl_sock_initialized = 1;
inet_csk(sk)->icsk_af_ops = &dccp_ipv6_af_ops;
}
return err;
}
| DoS | 0 | static int dccp_v6_init_sock(struct sock *sk)
{
static __u8 dccp_v6_ctl_sock_initialized;
int err = dccp_init_sock(sk, dccp_v6_ctl_sock_initialized);
if (err == 0) {
if (unlikely(!dccp_v6_ctl_sock_initialized))
dccp_v6_ctl_sock_initialized = 1;
inet_csk(sk)->icsk_af_ops = &dccp_ipv6_af_ops;
}
return err;
}
| @@ -573,7 +573,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
First: no IPv4 options.
*/
- newinet->opt = NULL;
+ newinet->inet_opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all; | CWE-362 | null | null |
15,029 | static int dccp_v6_rcv(struct sk_buff *skb)
{
const struct dccp_hdr *dh;
struct sock *sk;
int min_cov;
/* Step 1: Check header basics */
if (dccp_invalid_packet(skb))
goto discard_it;
/* Step 1: If header checksum is incorrect, drop packet and return. */
if (dccp_v6_csum_finish(skb, &ipv6_hdr(skb)->saddr,
&ipv6_hdr(skb)->daddr)) {
DCCP_WARN("dropped packet with invalid checksum\n");
goto discard_it;
}
dh = dccp_hdr(skb);
DCCP_SKB_CB(skb)->dccpd_seq = dccp_hdr_seq(dh);
DCCP_SKB_CB(skb)->dccpd_type = dh->dccph_type;
if (dccp_packet_without_ack(skb))
DCCP_SKB_CB(skb)->dccpd_ack_seq = DCCP_PKT_WITHOUT_ACK_SEQ;
else
DCCP_SKB_CB(skb)->dccpd_ack_seq = dccp_hdr_ack_seq(skb);
/* Step 2:
* Look up flow ID in table and get corresponding socket */
sk = __inet6_lookup_skb(&dccp_hashinfo, skb,
dh->dccph_sport, dh->dccph_dport);
/*
* Step 2:
* If no socket ...
*/
if (sk == NULL) {
dccp_pr_debug("failed to look up flow ID in table and "
"get corresponding socket\n");
goto no_dccp_socket;
}
/*
* Step 2:
* ... or S.state == TIMEWAIT,
* Generate Reset(No Connection) unless P.type == Reset
* Drop packet and return
*/
if (sk->sk_state == DCCP_TIME_WAIT) {
dccp_pr_debug("sk->sk_state == DCCP_TIME_WAIT: do_time_wait\n");
inet_twsk_put(inet_twsk(sk));
goto no_dccp_socket;
}
/*
* RFC 4340, sec. 9.2.1: Minimum Checksum Coverage
* o if MinCsCov = 0, only packets with CsCov = 0 are accepted
* o if MinCsCov > 0, also accept packets with CsCov >= MinCsCov
*/
min_cov = dccp_sk(sk)->dccps_pcrlen;
if (dh->dccph_cscov && (min_cov == 0 || dh->dccph_cscov < min_cov)) {
dccp_pr_debug("Packet CsCov %d does not satisfy MinCsCov %d\n",
dh->dccph_cscov, min_cov);
/* FIXME: send Data Dropped option (see also dccp_v4_rcv) */
goto discard_and_relse;
}
if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))
goto discard_and_relse;
return sk_receive_skb(sk, skb, 1) ? -1 : 0;
no_dccp_socket:
if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb))
goto discard_it;
/*
* Step 2:
* If no socket ...
* Generate Reset(No Connection) unless P.type == Reset
* Drop packet and return
*/
if (dh->dccph_type != DCCP_PKT_RESET) {
DCCP_SKB_CB(skb)->dccpd_reset_code =
DCCP_RESET_CODE_NO_CONNECTION;
dccp_v6_ctl_send_reset(sk, skb);
}
discard_it:
kfree_skb(skb);
return 0;
discard_and_relse:
sock_put(sk);
goto discard_it;
}
| DoS | 0 | static int dccp_v6_rcv(struct sk_buff *skb)
{
const struct dccp_hdr *dh;
struct sock *sk;
int min_cov;
/* Step 1: Check header basics */
if (dccp_invalid_packet(skb))
goto discard_it;
/* Step 1: If header checksum is incorrect, drop packet and return. */
if (dccp_v6_csum_finish(skb, &ipv6_hdr(skb)->saddr,
&ipv6_hdr(skb)->daddr)) {
DCCP_WARN("dropped packet with invalid checksum\n");
goto discard_it;
}
dh = dccp_hdr(skb);
DCCP_SKB_CB(skb)->dccpd_seq = dccp_hdr_seq(dh);
DCCP_SKB_CB(skb)->dccpd_type = dh->dccph_type;
if (dccp_packet_without_ack(skb))
DCCP_SKB_CB(skb)->dccpd_ack_seq = DCCP_PKT_WITHOUT_ACK_SEQ;
else
DCCP_SKB_CB(skb)->dccpd_ack_seq = dccp_hdr_ack_seq(skb);
/* Step 2:
* Look up flow ID in table and get corresponding socket */
sk = __inet6_lookup_skb(&dccp_hashinfo, skb,
dh->dccph_sport, dh->dccph_dport);
/*
* Step 2:
* If no socket ...
*/
if (sk == NULL) {
dccp_pr_debug("failed to look up flow ID in table and "
"get corresponding socket\n");
goto no_dccp_socket;
}
/*
* Step 2:
* ... or S.state == TIMEWAIT,
* Generate Reset(No Connection) unless P.type == Reset
* Drop packet and return
*/
if (sk->sk_state == DCCP_TIME_WAIT) {
dccp_pr_debug("sk->sk_state == DCCP_TIME_WAIT: do_time_wait\n");
inet_twsk_put(inet_twsk(sk));
goto no_dccp_socket;
}
/*
* RFC 4340, sec. 9.2.1: Minimum Checksum Coverage
* o if MinCsCov = 0, only packets with CsCov = 0 are accepted
* o if MinCsCov > 0, also accept packets with CsCov >= MinCsCov
*/
min_cov = dccp_sk(sk)->dccps_pcrlen;
if (dh->dccph_cscov && (min_cov == 0 || dh->dccph_cscov < min_cov)) {
dccp_pr_debug("Packet CsCov %d does not satisfy MinCsCov %d\n",
dh->dccph_cscov, min_cov);
/* FIXME: send Data Dropped option (see also dccp_v4_rcv) */
goto discard_and_relse;
}
if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb))
goto discard_and_relse;
return sk_receive_skb(sk, skb, 1) ? -1 : 0;
no_dccp_socket:
if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb))
goto discard_it;
/*
* Step 2:
* If no socket ...
* Generate Reset(No Connection) unless P.type == Reset
* Drop packet and return
*/
if (dh->dccph_type != DCCP_PKT_RESET) {
DCCP_SKB_CB(skb)->dccpd_reset_code =
DCCP_RESET_CODE_NO_CONNECTION;
dccp_v6_ctl_send_reset(sk, skb);
}
discard_it:
kfree_skb(skb);
return 0;
discard_and_relse:
sock_put(sk);
goto discard_it;
}
| @@ -573,7 +573,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
First: no IPv4 options.
*/
- newinet->opt = NULL;
+ newinet->inet_opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all; | CWE-362 | null | null |
15,030 | static void dccp_v6_reqsk_destructor(struct request_sock *req)
{
dccp_feat_list_purge(&dccp_rsk(req)->dreq_featneg);
if (inet6_rsk(req)->pktopts != NULL)
kfree_skb(inet6_rsk(req)->pktopts);
}
| DoS | 0 | static void dccp_v6_reqsk_destructor(struct request_sock *req)
{
dccp_feat_list_purge(&dccp_rsk(req)->dreq_featneg);
if (inet6_rsk(req)->pktopts != NULL)
kfree_skb(inet6_rsk(req)->pktopts);
}
| @@ -573,7 +573,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
First: no IPv4 options.
*/
- newinet->opt = NULL;
+ newinet->inet_opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all; | CWE-362 | null | null |
15,031 | static inline void dccp_v6_send_check(struct sock *sk, struct sk_buff *skb)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct dccp_hdr *dh = dccp_hdr(skb);
dccp_csum_outgoing(skb);
dh->dccph_checksum = dccp_v6_csum_finish(skb, &np->saddr, &np->daddr);
}
| DoS | 0 | static inline void dccp_v6_send_check(struct sock *sk, struct sk_buff *skb)
{
struct ipv6_pinfo *np = inet6_sk(sk);
struct dccp_hdr *dh = dccp_hdr(skb);
dccp_csum_outgoing(skb);
dh->dccph_checksum = dccp_v6_csum_finish(skb, &np->saddr, &np->daddr);
}
| @@ -573,7 +573,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
First: no IPv4 options.
*/
- newinet->opt = NULL;
+ newinet->inet_opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all; | CWE-362 | null | null |
15,032 | static int dccp_v6_send_response(struct sock *sk, struct request_sock *req,
struct request_values *rv_unused)
{
struct inet6_request_sock *ireq6 = inet6_rsk(req);
struct ipv6_pinfo *np = inet6_sk(sk);
struct sk_buff *skb;
struct ipv6_txoptions *opt = NULL;
struct in6_addr *final_p, final;
struct flowi6 fl6;
int err = -1;
struct dst_entry *dst;
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_proto = IPPROTO_DCCP;
ipv6_addr_copy(&fl6.daddr, &ireq6->rmt_addr);
ipv6_addr_copy(&fl6.saddr, &ireq6->loc_addr);
fl6.flowlabel = 0;
fl6.flowi6_oif = ireq6->iif;
fl6.fl6_dport = inet_rsk(req)->rmt_port;
fl6.fl6_sport = inet_rsk(req)->loc_port;
security_req_classify_flow(req, flowi6_to_flowi(&fl6));
opt = np->opt;
final_p = fl6_update_dst(&fl6, opt, &final);
dst = ip6_dst_lookup_flow(sk, &fl6, final_p, false);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
dst = NULL;
goto done;
}
skb = dccp_make_response(sk, dst, req);
if (skb != NULL) {
struct dccp_hdr *dh = dccp_hdr(skb);
dh->dccph_checksum = dccp_v6_csum_finish(skb,
&ireq6->loc_addr,
&ireq6->rmt_addr);
ipv6_addr_copy(&fl6.daddr, &ireq6->rmt_addr);
err = ip6_xmit(sk, skb, &fl6, opt);
err = net_xmit_eval(err);
}
done:
if (opt != NULL && opt != np->opt)
sock_kfree_s(sk, opt, opt->tot_len);
dst_release(dst);
return err;
}
| DoS | 0 | static int dccp_v6_send_response(struct sock *sk, struct request_sock *req,
struct request_values *rv_unused)
{
struct inet6_request_sock *ireq6 = inet6_rsk(req);
struct ipv6_pinfo *np = inet6_sk(sk);
struct sk_buff *skb;
struct ipv6_txoptions *opt = NULL;
struct in6_addr *final_p, final;
struct flowi6 fl6;
int err = -1;
struct dst_entry *dst;
memset(&fl6, 0, sizeof(fl6));
fl6.flowi6_proto = IPPROTO_DCCP;
ipv6_addr_copy(&fl6.daddr, &ireq6->rmt_addr);
ipv6_addr_copy(&fl6.saddr, &ireq6->loc_addr);
fl6.flowlabel = 0;
fl6.flowi6_oif = ireq6->iif;
fl6.fl6_dport = inet_rsk(req)->rmt_port;
fl6.fl6_sport = inet_rsk(req)->loc_port;
security_req_classify_flow(req, flowi6_to_flowi(&fl6));
opt = np->opt;
final_p = fl6_update_dst(&fl6, opt, &final);
dst = ip6_dst_lookup_flow(sk, &fl6, final_p, false);
if (IS_ERR(dst)) {
err = PTR_ERR(dst);
dst = NULL;
goto done;
}
skb = dccp_make_response(sk, dst, req);
if (skb != NULL) {
struct dccp_hdr *dh = dccp_hdr(skb);
dh->dccph_checksum = dccp_v6_csum_finish(skb,
&ireq6->loc_addr,
&ireq6->rmt_addr);
ipv6_addr_copy(&fl6.daddr, &ireq6->rmt_addr);
err = ip6_xmit(sk, skb, &fl6, opt);
err = net_xmit_eval(err);
}
done:
if (opt != NULL && opt != np->opt)
sock_kfree_s(sk, opt, opt->tot_len);
dst_release(dst);
return err;
}
| @@ -573,7 +573,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
First: no IPv4 options.
*/
- newinet->opt = NULL;
+ newinet->inet_opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all; | CWE-362 | null | null |
15,033 | static inline __u32 secure_dccpv6_sequence_number(__be32 *saddr, __be32 *daddr,
__be16 sport, __be16 dport )
{
return secure_tcpv6_sequence_number(saddr, daddr, sport, dport);
}
| DoS | 0 | static inline __u32 secure_dccpv6_sequence_number(__be32 *saddr, __be32 *daddr,
__be16 sport, __be16 dport )
{
return secure_tcpv6_sequence_number(saddr, daddr, sport, dport);
}
| @@ -573,7 +573,7 @@ static struct sock *dccp_v6_request_recv_sock(struct sock *sk,
First: no IPv4 options.
*/
- newinet->opt = NULL;
+ newinet->inet_opt = NULL;
/* Clone RX bits */
newnp->rxopt.all = np->rxopt.all; | CWE-362 | null | null |
15,034 | void build_ehash_secret(void)
{
u32 rnd;
do {
get_random_bytes(&rnd, sizeof(rnd));
} while (rnd == 0);
cmpxchg(&inet_ehash_secret, 0, rnd);
}
| DoS | 0 | void build_ehash_secret(void)
{
u32 rnd;
do {
get_random_bytes(&rnd, sizeof(rnd));
} while (rnd == 0);
cmpxchg(&inet_ehash_secret, 0, rnd);
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,035 | int inet_accept(struct socket *sock, struct socket *newsock, int flags)
{
struct sock *sk1 = sock->sk;
int err = -EINVAL;
struct sock *sk2 = sk1->sk_prot->accept(sk1, flags, &err);
if (!sk2)
goto do_err;
lock_sock(sk2);
WARN_ON(!((1 << sk2->sk_state) &
(TCPF_ESTABLISHED | TCPF_CLOSE_WAIT | TCPF_CLOSE)));
sock_graft(sk2, newsock);
newsock->state = SS_CONNECTED;
err = 0;
release_sock(sk2);
do_err:
return err;
}
| DoS | 0 | int inet_accept(struct socket *sock, struct socket *newsock, int flags)
{
struct sock *sk1 = sock->sk;
int err = -EINVAL;
struct sock *sk2 = sk1->sk_prot->accept(sk1, flags, &err);
if (!sk2)
goto do_err;
lock_sock(sk2);
WARN_ON(!((1 << sk2->sk_state) &
(TCPF_ESTABLISHED | TCPF_CLOSE_WAIT | TCPF_CLOSE)));
sock_graft(sk2, newsock);
newsock->state = SS_CONNECTED;
err = 0;
release_sock(sk2);
do_err:
return err;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,036 | static int inet_autobind(struct sock *sk)
{
struct inet_sock *inet;
/* We may need to bind the socket. */
lock_sock(sk);
inet = inet_sk(sk);
if (!inet->inet_num) {
if (sk->sk_prot->get_port(sk, 0)) {
release_sock(sk);
return -EAGAIN;
}
inet->inet_sport = htons(inet->inet_num);
}
release_sock(sk);
return 0;
}
| DoS | 0 | static int inet_autobind(struct sock *sk)
{
struct inet_sock *inet;
/* We may need to bind the socket. */
lock_sock(sk);
inet = inet_sk(sk);
if (!inet->inet_num) {
if (sk->sk_prot->get_port(sk, 0)) {
release_sock(sk);
return -EAGAIN;
}
inet->inet_sport = htons(inet->inet_num);
}
release_sock(sk);
return 0;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,037 | int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
{
struct sockaddr_in *addr = (struct sockaddr_in *)uaddr;
struct sock *sk = sock->sk;
struct inet_sock *inet = inet_sk(sk);
unsigned short snum;
int chk_addr_ret;
int err;
/* If the socket has its own bind function then use it. (RAW) */
if (sk->sk_prot->bind) {
err = sk->sk_prot->bind(sk, uaddr, addr_len);
goto out;
}
err = -EINVAL;
if (addr_len < sizeof(struct sockaddr_in))
goto out;
chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr);
/* Not specified by any standard per-se, however it breaks too
* many applications when removed. It is unfortunate since
* allowing applications to make a non-local bind solves
* several problems with systems using dynamic addressing.
* (ie. your servers still start up even if your ISDN link
* is temporarily down)
*/
err = -EADDRNOTAVAIL;
if (!sysctl_ip_nonlocal_bind &&
!(inet->freebind || inet->transparent) &&
addr->sin_addr.s_addr != htonl(INADDR_ANY) &&
chk_addr_ret != RTN_LOCAL &&
chk_addr_ret != RTN_MULTICAST &&
chk_addr_ret != RTN_BROADCAST)
goto out;
snum = ntohs(addr->sin_port);
err = -EACCES;
if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE))
goto out;
/* We keep a pair of addresses. rcv_saddr is the one
* used by hash lookups, and saddr is used for transmit.
*
* In the BSD API these are the same except where it
* would be illegal to use them (multicast/broadcast) in
* which case the sending device address is used.
*/
lock_sock(sk);
/* Check these errors (active socket, double bind). */
err = -EINVAL;
if (sk->sk_state != TCP_CLOSE || inet->inet_num)
goto out_release_sock;
inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr;
if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
inet->inet_saddr = 0; /* Use device */
/* Make sure we are allowed to bind here. */
if (sk->sk_prot->get_port(sk, snum)) {
inet->inet_saddr = inet->inet_rcv_saddr = 0;
err = -EADDRINUSE;
goto out_release_sock;
}
if (inet->inet_rcv_saddr)
sk->sk_userlocks |= SOCK_BINDADDR_LOCK;
if (snum)
sk->sk_userlocks |= SOCK_BINDPORT_LOCK;
inet->inet_sport = htons(inet->inet_num);
inet->inet_daddr = 0;
inet->inet_dport = 0;
sk_dst_reset(sk);
err = 0;
out_release_sock:
release_sock(sk);
out:
return err;
}
| DoS | 0 | int inet_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
{
struct sockaddr_in *addr = (struct sockaddr_in *)uaddr;
struct sock *sk = sock->sk;
struct inet_sock *inet = inet_sk(sk);
unsigned short snum;
int chk_addr_ret;
int err;
/* If the socket has its own bind function then use it. (RAW) */
if (sk->sk_prot->bind) {
err = sk->sk_prot->bind(sk, uaddr, addr_len);
goto out;
}
err = -EINVAL;
if (addr_len < sizeof(struct sockaddr_in))
goto out;
chk_addr_ret = inet_addr_type(sock_net(sk), addr->sin_addr.s_addr);
/* Not specified by any standard per-se, however it breaks too
* many applications when removed. It is unfortunate since
* allowing applications to make a non-local bind solves
* several problems with systems using dynamic addressing.
* (ie. your servers still start up even if your ISDN link
* is temporarily down)
*/
err = -EADDRNOTAVAIL;
if (!sysctl_ip_nonlocal_bind &&
!(inet->freebind || inet->transparent) &&
addr->sin_addr.s_addr != htonl(INADDR_ANY) &&
chk_addr_ret != RTN_LOCAL &&
chk_addr_ret != RTN_MULTICAST &&
chk_addr_ret != RTN_BROADCAST)
goto out;
snum = ntohs(addr->sin_port);
err = -EACCES;
if (snum && snum < PROT_SOCK && !capable(CAP_NET_BIND_SERVICE))
goto out;
/* We keep a pair of addresses. rcv_saddr is the one
* used by hash lookups, and saddr is used for transmit.
*
* In the BSD API these are the same except where it
* would be illegal to use them (multicast/broadcast) in
* which case the sending device address is used.
*/
lock_sock(sk);
/* Check these errors (active socket, double bind). */
err = -EINVAL;
if (sk->sk_state != TCP_CLOSE || inet->inet_num)
goto out_release_sock;
inet->inet_rcv_saddr = inet->inet_saddr = addr->sin_addr.s_addr;
if (chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST)
inet->inet_saddr = 0; /* Use device */
/* Make sure we are allowed to bind here. */
if (sk->sk_prot->get_port(sk, snum)) {
inet->inet_saddr = inet->inet_rcv_saddr = 0;
err = -EADDRINUSE;
goto out_release_sock;
}
if (inet->inet_rcv_saddr)
sk->sk_userlocks |= SOCK_BINDADDR_LOCK;
if (snum)
sk->sk_userlocks |= SOCK_BINDPORT_LOCK;
inet->inet_sport = htons(inet->inet_num);
inet->inet_daddr = 0;
inet->inet_dport = 0;
sk_dst_reset(sk);
err = 0;
out_release_sock:
release_sock(sk);
out:
return err;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,038 | int inet_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
struct sock *sk = sock->sk;
int err = -ENOIOCTLCMD;
if (sk->sk_prot->compat_ioctl)
err = sk->sk_prot->compat_ioctl(sk, cmd, arg);
return err;
}
| DoS | 0 | int inet_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
struct sock *sk = sock->sk;
int err = -ENOIOCTLCMD;
if (sk->sk_prot->compat_ioctl)
err = sk->sk_prot->compat_ioctl(sk, cmd, arg);
return err;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,039 | static int inet_create(struct net *net, struct socket *sock, int protocol,
int kern)
{
struct sock *sk;
struct inet_protosw *answer;
struct inet_sock *inet;
struct proto *answer_prot;
unsigned char answer_flags;
char answer_no_check;
int try_loading_module = 0;
int err;
if (unlikely(!inet_ehash_secret))
if (sock->type != SOCK_RAW && sock->type != SOCK_DGRAM)
build_ehash_secret();
sock->state = SS_UNCONNECTED;
/* Look for the requested type/protocol pair. */
lookup_protocol:
err = -ESOCKTNOSUPPORT;
rcu_read_lock();
list_for_each_entry_rcu(answer, &inetsw[sock->type], list) {
err = 0;
/* Check the non-wild match. */
if (protocol == answer->protocol) {
if (protocol != IPPROTO_IP)
break;
} else {
/* Check for the two wild cases. */
if (IPPROTO_IP == protocol) {
protocol = answer->protocol;
break;
}
if (IPPROTO_IP == answer->protocol)
break;
}
err = -EPROTONOSUPPORT;
}
if (unlikely(err)) {
if (try_loading_module < 2) {
rcu_read_unlock();
/*
* Be more specific, e.g. net-pf-2-proto-132-type-1
* (net-pf-PF_INET-proto-IPPROTO_SCTP-type-SOCK_STREAM)
*/
if (++try_loading_module == 1)
request_module("net-pf-%d-proto-%d-type-%d",
PF_INET, protocol, sock->type);
/*
* Fall back to generic, e.g. net-pf-2-proto-132
* (net-pf-PF_INET-proto-IPPROTO_SCTP)
*/
else
request_module("net-pf-%d-proto-%d",
PF_INET, protocol);
goto lookup_protocol;
} else
goto out_rcu_unlock;
}
err = -EPERM;
if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW))
goto out_rcu_unlock;
err = -EAFNOSUPPORT;
if (!inet_netns_ok(net, protocol))
goto out_rcu_unlock;
sock->ops = answer->ops;
answer_prot = answer->prot;
answer_no_check = answer->no_check;
answer_flags = answer->flags;
rcu_read_unlock();
WARN_ON(answer_prot->slab == NULL);
err = -ENOBUFS;
sk = sk_alloc(net, PF_INET, GFP_KERNEL, answer_prot);
if (sk == NULL)
goto out;
err = 0;
sk->sk_no_check = answer_no_check;
if (INET_PROTOSW_REUSE & answer_flags)
sk->sk_reuse = 1;
inet = inet_sk(sk);
inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0;
inet->nodefrag = 0;
if (SOCK_RAW == sock->type) {
inet->inet_num = protocol;
if (IPPROTO_RAW == protocol)
inet->hdrincl = 1;
}
if (ipv4_config.no_pmtu_disc)
inet->pmtudisc = IP_PMTUDISC_DONT;
else
inet->pmtudisc = IP_PMTUDISC_WANT;
inet->inet_id = 0;
sock_init_data(sock, sk);
sk->sk_destruct = inet_sock_destruct;
sk->sk_protocol = protocol;
sk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;
inet->uc_ttl = -1;
inet->mc_loop = 1;
inet->mc_ttl = 1;
inet->mc_all = 1;
inet->mc_index = 0;
inet->mc_list = NULL;
sk_refcnt_debug_inc(sk);
if (inet->inet_num) {
/* It assumes that any protocol which allows
* the user to assign a number at socket
* creation time automatically
* shares.
*/
inet->inet_sport = htons(inet->inet_num);
/* Add to protocol hash chains. */
sk->sk_prot->hash(sk);
}
if (sk->sk_prot->init) {
err = sk->sk_prot->init(sk);
if (err)
sk_common_release(sk);
}
out:
return err;
out_rcu_unlock:
rcu_read_unlock();
goto out;
}
| DoS | 0 | static int inet_create(struct net *net, struct socket *sock, int protocol,
int kern)
{
struct sock *sk;
struct inet_protosw *answer;
struct inet_sock *inet;
struct proto *answer_prot;
unsigned char answer_flags;
char answer_no_check;
int try_loading_module = 0;
int err;
if (unlikely(!inet_ehash_secret))
if (sock->type != SOCK_RAW && sock->type != SOCK_DGRAM)
build_ehash_secret();
sock->state = SS_UNCONNECTED;
/* Look for the requested type/protocol pair. */
lookup_protocol:
err = -ESOCKTNOSUPPORT;
rcu_read_lock();
list_for_each_entry_rcu(answer, &inetsw[sock->type], list) {
err = 0;
/* Check the non-wild match. */
if (protocol == answer->protocol) {
if (protocol != IPPROTO_IP)
break;
} else {
/* Check for the two wild cases. */
if (IPPROTO_IP == protocol) {
protocol = answer->protocol;
break;
}
if (IPPROTO_IP == answer->protocol)
break;
}
err = -EPROTONOSUPPORT;
}
if (unlikely(err)) {
if (try_loading_module < 2) {
rcu_read_unlock();
/*
* Be more specific, e.g. net-pf-2-proto-132-type-1
* (net-pf-PF_INET-proto-IPPROTO_SCTP-type-SOCK_STREAM)
*/
if (++try_loading_module == 1)
request_module("net-pf-%d-proto-%d-type-%d",
PF_INET, protocol, sock->type);
/*
* Fall back to generic, e.g. net-pf-2-proto-132
* (net-pf-PF_INET-proto-IPPROTO_SCTP)
*/
else
request_module("net-pf-%d-proto-%d",
PF_INET, protocol);
goto lookup_protocol;
} else
goto out_rcu_unlock;
}
err = -EPERM;
if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW))
goto out_rcu_unlock;
err = -EAFNOSUPPORT;
if (!inet_netns_ok(net, protocol))
goto out_rcu_unlock;
sock->ops = answer->ops;
answer_prot = answer->prot;
answer_no_check = answer->no_check;
answer_flags = answer->flags;
rcu_read_unlock();
WARN_ON(answer_prot->slab == NULL);
err = -ENOBUFS;
sk = sk_alloc(net, PF_INET, GFP_KERNEL, answer_prot);
if (sk == NULL)
goto out;
err = 0;
sk->sk_no_check = answer_no_check;
if (INET_PROTOSW_REUSE & answer_flags)
sk->sk_reuse = 1;
inet = inet_sk(sk);
inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0;
inet->nodefrag = 0;
if (SOCK_RAW == sock->type) {
inet->inet_num = protocol;
if (IPPROTO_RAW == protocol)
inet->hdrincl = 1;
}
if (ipv4_config.no_pmtu_disc)
inet->pmtudisc = IP_PMTUDISC_DONT;
else
inet->pmtudisc = IP_PMTUDISC_WANT;
inet->inet_id = 0;
sock_init_data(sock, sk);
sk->sk_destruct = inet_sock_destruct;
sk->sk_protocol = protocol;
sk->sk_backlog_rcv = sk->sk_prot->backlog_rcv;
inet->uc_ttl = -1;
inet->mc_loop = 1;
inet->mc_ttl = 1;
inet->mc_all = 1;
inet->mc_index = 0;
inet->mc_list = NULL;
sk_refcnt_debug_inc(sk);
if (inet->inet_num) {
/* It assumes that any protocol which allows
* the user to assign a number at socket
* creation time automatically
* shares.
*/
inet->inet_sport = htons(inet->inet_num);
/* Add to protocol hash chains. */
sk->sk_prot->hash(sk);
}
if (sk->sk_prot->init) {
err = sk->sk_prot->init(sk);
if (err)
sk_common_release(sk);
}
out:
return err;
out_rcu_unlock:
rcu_read_unlock();
goto out;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,040 | int inet_getname(struct socket *sock, struct sockaddr *uaddr,
int *uaddr_len, int peer)
{
struct sock *sk = sock->sk;
struct inet_sock *inet = inet_sk(sk);
DECLARE_SOCKADDR(struct sockaddr_in *, sin, uaddr);
sin->sin_family = AF_INET;
if (peer) {
if (!inet->inet_dport ||
(((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) &&
peer == 1))
return -ENOTCONN;
sin->sin_port = inet->inet_dport;
sin->sin_addr.s_addr = inet->inet_daddr;
} else {
__be32 addr = inet->inet_rcv_saddr;
if (!addr)
addr = inet->inet_saddr;
sin->sin_port = inet->inet_sport;
sin->sin_addr.s_addr = addr;
}
memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
*uaddr_len = sizeof(*sin);
return 0;
}
| DoS | 0 | int inet_getname(struct socket *sock, struct sockaddr *uaddr,
int *uaddr_len, int peer)
{
struct sock *sk = sock->sk;
struct inet_sock *inet = inet_sk(sk);
DECLARE_SOCKADDR(struct sockaddr_in *, sin, uaddr);
sin->sin_family = AF_INET;
if (peer) {
if (!inet->inet_dport ||
(((1 << sk->sk_state) & (TCPF_CLOSE | TCPF_SYN_SENT)) &&
peer == 1))
return -ENOTCONN;
sin->sin_port = inet->inet_dport;
sin->sin_addr.s_addr = inet->inet_daddr;
} else {
__be32 addr = inet->inet_rcv_saddr;
if (!addr)
addr = inet->inet_saddr;
sin->sin_port = inet->inet_sport;
sin->sin_addr.s_addr = addr;
}
memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
*uaddr_len = sizeof(*sin);
return 0;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,041 | static int inet_gro_complete(struct sk_buff *skb)
{
const struct net_protocol *ops;
struct iphdr *iph = ip_hdr(skb);
int proto = iph->protocol & (MAX_INET_PROTOS - 1);
int err = -ENOSYS;
__be16 newlen = htons(skb->len - skb_network_offset(skb));
csum_replace2(&iph->check, iph->tot_len, newlen);
iph->tot_len = newlen;
rcu_read_lock();
ops = rcu_dereference(inet_protos[proto]);
if (WARN_ON(!ops || !ops->gro_complete))
goto out_unlock;
err = ops->gro_complete(skb);
out_unlock:
rcu_read_unlock();
return err;
}
| DoS | 0 | static int inet_gro_complete(struct sk_buff *skb)
{
const struct net_protocol *ops;
struct iphdr *iph = ip_hdr(skb);
int proto = iph->protocol & (MAX_INET_PROTOS - 1);
int err = -ENOSYS;
__be16 newlen = htons(skb->len - skb_network_offset(skb));
csum_replace2(&iph->check, iph->tot_len, newlen);
iph->tot_len = newlen;
rcu_read_lock();
ops = rcu_dereference(inet_protos[proto]);
if (WARN_ON(!ops || !ops->gro_complete))
goto out_unlock;
err = ops->gro_complete(skb);
out_unlock:
rcu_read_unlock();
return err;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,042 | static struct sk_buff **inet_gro_receive(struct sk_buff **head,
struct sk_buff *skb)
{
const struct net_protocol *ops;
struct sk_buff **pp = NULL;
struct sk_buff *p;
const struct iphdr *iph;
unsigned int hlen;
unsigned int off;
unsigned int id;
int flush = 1;
int proto;
off = skb_gro_offset(skb);
hlen = off + sizeof(*iph);
iph = skb_gro_header_fast(skb, off);
if (skb_gro_header_hard(skb, hlen)) {
iph = skb_gro_header_slow(skb, hlen, off);
if (unlikely(!iph))
goto out;
}
proto = iph->protocol & (MAX_INET_PROTOS - 1);
rcu_read_lock();
ops = rcu_dereference(inet_protos[proto]);
if (!ops || !ops->gro_receive)
goto out_unlock;
if (*(u8 *)iph != 0x45)
goto out_unlock;
if (unlikely(ip_fast_csum((u8 *)iph, iph->ihl)))
goto out_unlock;
id = ntohl(*(__be32 *)&iph->id);
flush = (u16)((ntohl(*(__be32 *)iph) ^ skb_gro_len(skb)) | (id ^ IP_DF));
id >>= 16;
for (p = *head; p; p = p->next) {
struct iphdr *iph2;
if (!NAPI_GRO_CB(p)->same_flow)
continue;
iph2 = ip_hdr(p);
if ((iph->protocol ^ iph2->protocol) |
(iph->tos ^ iph2->tos) |
((__force u32)iph->saddr ^ (__force u32)iph2->saddr) |
((__force u32)iph->daddr ^ (__force u32)iph2->daddr)) {
NAPI_GRO_CB(p)->same_flow = 0;
continue;
}
/* All fields must match except length and checksum. */
NAPI_GRO_CB(p)->flush |=
(iph->ttl ^ iph2->ttl) |
((u16)(ntohs(iph2->id) + NAPI_GRO_CB(p)->count) ^ id);
NAPI_GRO_CB(p)->flush |= flush;
}
NAPI_GRO_CB(skb)->flush |= flush;
skb_gro_pull(skb, sizeof(*iph));
skb_set_transport_header(skb, skb_gro_offset(skb));
pp = ops->gro_receive(head, skb);
out_unlock:
rcu_read_unlock();
out:
NAPI_GRO_CB(skb)->flush |= flush;
return pp;
}
| DoS | 0 | static struct sk_buff **inet_gro_receive(struct sk_buff **head,
struct sk_buff *skb)
{
const struct net_protocol *ops;
struct sk_buff **pp = NULL;
struct sk_buff *p;
const struct iphdr *iph;
unsigned int hlen;
unsigned int off;
unsigned int id;
int flush = 1;
int proto;
off = skb_gro_offset(skb);
hlen = off + sizeof(*iph);
iph = skb_gro_header_fast(skb, off);
if (skb_gro_header_hard(skb, hlen)) {
iph = skb_gro_header_slow(skb, hlen, off);
if (unlikely(!iph))
goto out;
}
proto = iph->protocol & (MAX_INET_PROTOS - 1);
rcu_read_lock();
ops = rcu_dereference(inet_protos[proto]);
if (!ops || !ops->gro_receive)
goto out_unlock;
if (*(u8 *)iph != 0x45)
goto out_unlock;
if (unlikely(ip_fast_csum((u8 *)iph, iph->ihl)))
goto out_unlock;
id = ntohl(*(__be32 *)&iph->id);
flush = (u16)((ntohl(*(__be32 *)iph) ^ skb_gro_len(skb)) | (id ^ IP_DF));
id >>= 16;
for (p = *head; p; p = p->next) {
struct iphdr *iph2;
if (!NAPI_GRO_CB(p)->same_flow)
continue;
iph2 = ip_hdr(p);
if ((iph->protocol ^ iph2->protocol) |
(iph->tos ^ iph2->tos) |
((__force u32)iph->saddr ^ (__force u32)iph2->saddr) |
((__force u32)iph->daddr ^ (__force u32)iph2->daddr)) {
NAPI_GRO_CB(p)->same_flow = 0;
continue;
}
/* All fields must match except length and checksum. */
NAPI_GRO_CB(p)->flush |=
(iph->ttl ^ iph2->ttl) |
((u16)(ntohs(iph2->id) + NAPI_GRO_CB(p)->count) ^ id);
NAPI_GRO_CB(p)->flush |= flush;
}
NAPI_GRO_CB(skb)->flush |= flush;
skb_gro_pull(skb, sizeof(*iph));
skb_set_transport_header(skb, skb_gro_offset(skb));
pp = ops->gro_receive(head, skb);
out_unlock:
rcu_read_unlock();
out:
NAPI_GRO_CB(skb)->flush |= flush;
return pp;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,043 | static struct sk_buff *inet_gso_segment(struct sk_buff *skb, u32 features)
{
struct sk_buff *segs = ERR_PTR(-EINVAL);
struct iphdr *iph;
const struct net_protocol *ops;
int proto;
int ihl;
int id;
unsigned int offset = 0;
if (!(features & NETIF_F_V4_CSUM))
features &= ~NETIF_F_SG;
if (unlikely(skb_shinfo(skb)->gso_type &
~(SKB_GSO_TCPV4 |
SKB_GSO_UDP |
SKB_GSO_DODGY |
SKB_GSO_TCP_ECN |
0)))
goto out;
if (unlikely(!pskb_may_pull(skb, sizeof(*iph))))
goto out;
iph = ip_hdr(skb);
ihl = iph->ihl * 4;
if (ihl < sizeof(*iph))
goto out;
if (unlikely(!pskb_may_pull(skb, ihl)))
goto out;
__skb_pull(skb, ihl);
skb_reset_transport_header(skb);
iph = ip_hdr(skb);
id = ntohs(iph->id);
proto = iph->protocol & (MAX_INET_PROTOS - 1);
segs = ERR_PTR(-EPROTONOSUPPORT);
rcu_read_lock();
ops = rcu_dereference(inet_protos[proto]);
if (likely(ops && ops->gso_segment))
segs = ops->gso_segment(skb, features);
rcu_read_unlock();
if (!segs || IS_ERR(segs))
goto out;
skb = segs;
do {
iph = ip_hdr(skb);
if (proto == IPPROTO_UDP) {
iph->id = htons(id);
iph->frag_off = htons(offset >> 3);
if (skb->next != NULL)
iph->frag_off |= htons(IP_MF);
offset += (skb->len - skb->mac_len - iph->ihl * 4);
} else
iph->id = htons(id++);
iph->tot_len = htons(skb->len - skb->mac_len);
iph->check = 0;
iph->check = ip_fast_csum(skb_network_header(skb), iph->ihl);
} while ((skb = skb->next));
out:
return segs;
}
| DoS | 0 | static struct sk_buff *inet_gso_segment(struct sk_buff *skb, u32 features)
{
struct sk_buff *segs = ERR_PTR(-EINVAL);
struct iphdr *iph;
const struct net_protocol *ops;
int proto;
int ihl;
int id;
unsigned int offset = 0;
if (!(features & NETIF_F_V4_CSUM))
features &= ~NETIF_F_SG;
if (unlikely(skb_shinfo(skb)->gso_type &
~(SKB_GSO_TCPV4 |
SKB_GSO_UDP |
SKB_GSO_DODGY |
SKB_GSO_TCP_ECN |
0)))
goto out;
if (unlikely(!pskb_may_pull(skb, sizeof(*iph))))
goto out;
iph = ip_hdr(skb);
ihl = iph->ihl * 4;
if (ihl < sizeof(*iph))
goto out;
if (unlikely(!pskb_may_pull(skb, ihl)))
goto out;
__skb_pull(skb, ihl);
skb_reset_transport_header(skb);
iph = ip_hdr(skb);
id = ntohs(iph->id);
proto = iph->protocol & (MAX_INET_PROTOS - 1);
segs = ERR_PTR(-EPROTONOSUPPORT);
rcu_read_lock();
ops = rcu_dereference(inet_protos[proto]);
if (likely(ops && ops->gso_segment))
segs = ops->gso_segment(skb, features);
rcu_read_unlock();
if (!segs || IS_ERR(segs))
goto out;
skb = segs;
do {
iph = ip_hdr(skb);
if (proto == IPPROTO_UDP) {
iph->id = htons(id);
iph->frag_off = htons(offset >> 3);
if (skb->next != NULL)
iph->frag_off |= htons(IP_MF);
offset += (skb->len - skb->mac_len - iph->ihl * 4);
} else
iph->id = htons(id++);
iph->tot_len = htons(skb->len - skb->mac_len);
iph->check = 0;
iph->check = ip_fast_csum(skb_network_header(skb), iph->ihl);
} while ((skb = skb->next));
out:
return segs;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,044 | static int inet_gso_send_check(struct sk_buff *skb)
{
const struct iphdr *iph;
const struct net_protocol *ops;
int proto;
int ihl;
int err = -EINVAL;
if (unlikely(!pskb_may_pull(skb, sizeof(*iph))))
goto out;
iph = ip_hdr(skb);
ihl = iph->ihl * 4;
if (ihl < sizeof(*iph))
goto out;
if (unlikely(!pskb_may_pull(skb, ihl)))
goto out;
__skb_pull(skb, ihl);
skb_reset_transport_header(skb);
iph = ip_hdr(skb);
proto = iph->protocol & (MAX_INET_PROTOS - 1);
err = -EPROTONOSUPPORT;
rcu_read_lock();
ops = rcu_dereference(inet_protos[proto]);
if (likely(ops && ops->gso_send_check))
err = ops->gso_send_check(skb);
rcu_read_unlock();
out:
return err;
}
| DoS | 0 | static int inet_gso_send_check(struct sk_buff *skb)
{
const struct iphdr *iph;
const struct net_protocol *ops;
int proto;
int ihl;
int err = -EINVAL;
if (unlikely(!pskb_may_pull(skb, sizeof(*iph))))
goto out;
iph = ip_hdr(skb);
ihl = iph->ihl * 4;
if (ihl < sizeof(*iph))
goto out;
if (unlikely(!pskb_may_pull(skb, ihl)))
goto out;
__skb_pull(skb, ihl);
skb_reset_transport_header(skb);
iph = ip_hdr(skb);
proto = iph->protocol & (MAX_INET_PROTOS - 1);
err = -EPROTONOSUPPORT;
rcu_read_lock();
ops = rcu_dereference(inet_protos[proto]);
if (likely(ops && ops->gso_send_check))
err = ops->gso_send_check(skb);
rcu_read_unlock();
out:
return err;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,045 | static int __init inet_init(void)
{
struct sk_buff *dummy_skb;
struct inet_protosw *q;
struct list_head *r;
int rc = -EINVAL;
BUILD_BUG_ON(sizeof(struct inet_skb_parm) > sizeof(dummy_skb->cb));
sysctl_local_reserved_ports = kzalloc(65536 / 8, GFP_KERNEL);
if (!sysctl_local_reserved_ports)
goto out;
rc = proto_register(&tcp_prot, 1);
if (rc)
goto out_free_reserved_ports;
rc = proto_register(&udp_prot, 1);
if (rc)
goto out_unregister_tcp_proto;
rc = proto_register(&raw_prot, 1);
if (rc)
goto out_unregister_udp_proto;
/*
* Tell SOCKET that we are alive...
*/
(void)sock_register(&inet_family_ops);
#ifdef CONFIG_SYSCTL
ip_static_sysctl_init();
#endif
/*
* Add all the base protocols.
*/
if (inet_add_protocol(&icmp_protocol, IPPROTO_ICMP) < 0)
printk(KERN_CRIT "inet_init: Cannot add ICMP protocol\n");
if (inet_add_protocol(&udp_protocol, IPPROTO_UDP) < 0)
printk(KERN_CRIT "inet_init: Cannot add UDP protocol\n");
if (inet_add_protocol(&tcp_protocol, IPPROTO_TCP) < 0)
printk(KERN_CRIT "inet_init: Cannot add TCP protocol\n");
#ifdef CONFIG_IP_MULTICAST
if (inet_add_protocol(&igmp_protocol, IPPROTO_IGMP) < 0)
printk(KERN_CRIT "inet_init: Cannot add IGMP protocol\n");
#endif
/* Register the socket-side information for inet_create. */
for (r = &inetsw[0]; r < &inetsw[SOCK_MAX]; ++r)
INIT_LIST_HEAD(r);
for (q = inetsw_array; q < &inetsw_array[INETSW_ARRAY_LEN]; ++q)
inet_register_protosw(q);
/*
* Set the ARP module up
*/
arp_init();
/*
* Set the IP module up
*/
ip_init();
tcp_v4_init();
/* Setup TCP slab cache for open requests. */
tcp_init();
/* Setup UDP memory threshold */
udp_init();
/* Add UDP-Lite (RFC 3828) */
udplite4_register();
/*
* Set the ICMP layer up
*/
if (icmp_init() < 0)
panic("Failed to create the ICMP control socket.\n");
/*
* Initialise the multicast router
*/
#if defined(CONFIG_IP_MROUTE)
if (ip_mr_init())
printk(KERN_CRIT "inet_init: Cannot init ipv4 mroute\n");
#endif
/*
* Initialise per-cpu ipv4 mibs
*/
if (init_ipv4_mibs())
printk(KERN_CRIT "inet_init: Cannot init ipv4 mibs\n");
ipv4_proc_init();
ipfrag_init();
dev_add_pack(&ip_packet_type);
rc = 0;
out:
return rc;
out_unregister_udp_proto:
proto_unregister(&udp_prot);
out_unregister_tcp_proto:
proto_unregister(&tcp_prot);
out_free_reserved_ports:
kfree(sysctl_local_reserved_ports);
goto out;
}
| DoS | 0 | static int __init inet_init(void)
{
struct sk_buff *dummy_skb;
struct inet_protosw *q;
struct list_head *r;
int rc = -EINVAL;
BUILD_BUG_ON(sizeof(struct inet_skb_parm) > sizeof(dummy_skb->cb));
sysctl_local_reserved_ports = kzalloc(65536 / 8, GFP_KERNEL);
if (!sysctl_local_reserved_ports)
goto out;
rc = proto_register(&tcp_prot, 1);
if (rc)
goto out_free_reserved_ports;
rc = proto_register(&udp_prot, 1);
if (rc)
goto out_unregister_tcp_proto;
rc = proto_register(&raw_prot, 1);
if (rc)
goto out_unregister_udp_proto;
/*
* Tell SOCKET that we are alive...
*/
(void)sock_register(&inet_family_ops);
#ifdef CONFIG_SYSCTL
ip_static_sysctl_init();
#endif
/*
* Add all the base protocols.
*/
if (inet_add_protocol(&icmp_protocol, IPPROTO_ICMP) < 0)
printk(KERN_CRIT "inet_init: Cannot add ICMP protocol\n");
if (inet_add_protocol(&udp_protocol, IPPROTO_UDP) < 0)
printk(KERN_CRIT "inet_init: Cannot add UDP protocol\n");
if (inet_add_protocol(&tcp_protocol, IPPROTO_TCP) < 0)
printk(KERN_CRIT "inet_init: Cannot add TCP protocol\n");
#ifdef CONFIG_IP_MULTICAST
if (inet_add_protocol(&igmp_protocol, IPPROTO_IGMP) < 0)
printk(KERN_CRIT "inet_init: Cannot add IGMP protocol\n");
#endif
/* Register the socket-side information for inet_create. */
for (r = &inetsw[0]; r < &inetsw[SOCK_MAX]; ++r)
INIT_LIST_HEAD(r);
for (q = inetsw_array; q < &inetsw_array[INETSW_ARRAY_LEN]; ++q)
inet_register_protosw(q);
/*
* Set the ARP module up
*/
arp_init();
/*
* Set the IP module up
*/
ip_init();
tcp_v4_init();
/* Setup TCP slab cache for open requests. */
tcp_init();
/* Setup UDP memory threshold */
udp_init();
/* Add UDP-Lite (RFC 3828) */
udplite4_register();
/*
* Set the ICMP layer up
*/
if (icmp_init() < 0)
panic("Failed to create the ICMP control socket.\n");
/*
* Initialise the multicast router
*/
#if defined(CONFIG_IP_MROUTE)
if (ip_mr_init())
printk(KERN_CRIT "inet_init: Cannot init ipv4 mroute\n");
#endif
/*
* Initialise per-cpu ipv4 mibs
*/
if (init_ipv4_mibs())
printk(KERN_CRIT "inet_init: Cannot init ipv4 mibs\n");
ipv4_proc_init();
ipfrag_init();
dev_add_pack(&ip_packet_type);
rc = 0;
out:
return rc;
out_unregister_udp_proto:
proto_unregister(&udp_prot);
out_unregister_tcp_proto:
proto_unregister(&tcp_prot);
out_free_reserved_ports:
kfree(sysctl_local_reserved_ports);
goto out;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,046 | int inet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
struct sock *sk = sock->sk;
int err = 0;
struct net *net = sock_net(sk);
switch (cmd) {
case SIOCGSTAMP:
err = sock_get_timestamp(sk, (struct timeval __user *)arg);
break;
case SIOCGSTAMPNS:
err = sock_get_timestampns(sk, (struct timespec __user *)arg);
break;
case SIOCADDRT:
case SIOCDELRT:
case SIOCRTMSG:
err = ip_rt_ioctl(net, cmd, (void __user *)arg);
break;
case SIOCDARP:
case SIOCGARP:
case SIOCSARP:
err = arp_ioctl(net, cmd, (void __user *)arg);
break;
case SIOCGIFADDR:
case SIOCSIFADDR:
case SIOCGIFBRDADDR:
case SIOCSIFBRDADDR:
case SIOCGIFNETMASK:
case SIOCSIFNETMASK:
case SIOCGIFDSTADDR:
case SIOCSIFDSTADDR:
case SIOCSIFPFLAGS:
case SIOCGIFPFLAGS:
case SIOCSIFFLAGS:
err = devinet_ioctl(net, cmd, (void __user *)arg);
break;
default:
if (sk->sk_prot->ioctl)
err = sk->sk_prot->ioctl(sk, cmd, arg);
else
err = -ENOIOCTLCMD;
break;
}
return err;
}
| DoS | 0 | int inet_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
struct sock *sk = sock->sk;
int err = 0;
struct net *net = sock_net(sk);
switch (cmd) {
case SIOCGSTAMP:
err = sock_get_timestamp(sk, (struct timeval __user *)arg);
break;
case SIOCGSTAMPNS:
err = sock_get_timestampns(sk, (struct timespec __user *)arg);
break;
case SIOCADDRT:
case SIOCDELRT:
case SIOCRTMSG:
err = ip_rt_ioctl(net, cmd, (void __user *)arg);
break;
case SIOCDARP:
case SIOCGARP:
case SIOCSARP:
err = arp_ioctl(net, cmd, (void __user *)arg);
break;
case SIOCGIFADDR:
case SIOCSIFADDR:
case SIOCGIFBRDADDR:
case SIOCSIFBRDADDR:
case SIOCGIFNETMASK:
case SIOCSIFNETMASK:
case SIOCGIFDSTADDR:
case SIOCSIFDSTADDR:
case SIOCSIFPFLAGS:
case SIOCGIFPFLAGS:
case SIOCSIFFLAGS:
err = devinet_ioctl(net, cmd, (void __user *)arg);
break;
default:
if (sk->sk_prot->ioctl)
err = sk->sk_prot->ioctl(sk, cmd, arg);
else
err = -ENOIOCTLCMD;
break;
}
return err;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,047 | int inet_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg,
size_t size, int flags)
{
struct sock *sk = sock->sk;
int addr_len = 0;
int err;
sock_rps_record_flow(sk);
err = sk->sk_prot->recvmsg(iocb, sk, msg, size, flags & MSG_DONTWAIT,
flags & ~MSG_DONTWAIT, &addr_len);
if (err >= 0)
msg->msg_namelen = addr_len;
return err;
}
| DoS | 0 | int inet_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg,
size_t size, int flags)
{
struct sock *sk = sock->sk;
int addr_len = 0;
int err;
sock_rps_record_flow(sk);
err = sk->sk_prot->recvmsg(iocb, sk, msg, size, flags & MSG_DONTWAIT,
flags & ~MSG_DONTWAIT, &addr_len);
if (err >= 0)
msg->msg_namelen = addr_len;
return err;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,048 | void inet_register_protosw(struct inet_protosw *p)
{
struct list_head *lh;
struct inet_protosw *answer;
int protocol = p->protocol;
struct list_head *last_perm;
spin_lock_bh(&inetsw_lock);
if (p->type >= SOCK_MAX)
goto out_illegal;
/* If we are trying to override a permanent protocol, bail. */
answer = NULL;
last_perm = &inetsw[p->type];
list_for_each(lh, &inetsw[p->type]) {
answer = list_entry(lh, struct inet_protosw, list);
/* Check only the non-wild match. */
if (INET_PROTOSW_PERMANENT & answer->flags) {
if (protocol == answer->protocol)
break;
last_perm = lh;
}
answer = NULL;
}
if (answer)
goto out_permanent;
/* Add the new entry after the last permanent entry if any, so that
* the new entry does not override a permanent entry when matched with
* a wild-card protocol. But it is allowed to override any existing
* non-permanent entry. This means that when we remove this entry, the
* system automatically returns to the old behavior.
*/
list_add_rcu(&p->list, last_perm);
out:
spin_unlock_bh(&inetsw_lock);
return;
out_permanent:
printk(KERN_ERR "Attempt to override permanent protocol %d.\n",
protocol);
goto out;
out_illegal:
printk(KERN_ERR
"Ignoring attempt to register invalid socket type %d.\n",
p->type);
goto out;
}
| DoS | 0 | void inet_register_protosw(struct inet_protosw *p)
{
struct list_head *lh;
struct inet_protosw *answer;
int protocol = p->protocol;
struct list_head *last_perm;
spin_lock_bh(&inetsw_lock);
if (p->type >= SOCK_MAX)
goto out_illegal;
/* If we are trying to override a permanent protocol, bail. */
answer = NULL;
last_perm = &inetsw[p->type];
list_for_each(lh, &inetsw[p->type]) {
answer = list_entry(lh, struct inet_protosw, list);
/* Check only the non-wild match. */
if (INET_PROTOSW_PERMANENT & answer->flags) {
if (protocol == answer->protocol)
break;
last_perm = lh;
}
answer = NULL;
}
if (answer)
goto out_permanent;
/* Add the new entry after the last permanent entry if any, so that
* the new entry does not override a permanent entry when matched with
* a wild-card protocol. But it is allowed to override any existing
* non-permanent entry. This means that when we remove this entry, the
* system automatically returns to the old behavior.
*/
list_add_rcu(&p->list, last_perm);
out:
spin_unlock_bh(&inetsw_lock);
return;
out_permanent:
printk(KERN_ERR "Attempt to override permanent protocol %d.\n",
protocol);
goto out;
out_illegal:
printk(KERN_ERR
"Ignoring attempt to register invalid socket type %d.\n",
p->type);
goto out;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,049 | ssize_t inet_sendpage(struct socket *sock, struct page *page, int offset,
size_t size, int flags)
{
struct sock *sk = sock->sk;
sock_rps_record_flow(sk);
/* We may need to bind the socket. */
if (!inet_sk(sk)->inet_num && !sk->sk_prot->no_autobind &&
inet_autobind(sk))
return -EAGAIN;
if (sk->sk_prot->sendpage)
return sk->sk_prot->sendpage(sk, page, offset, size, flags);
return sock_no_sendpage(sock, page, offset, size, flags);
}
| DoS | 0 | ssize_t inet_sendpage(struct socket *sock, struct page *page, int offset,
size_t size, int flags)
{
struct sock *sk = sock->sk;
sock_rps_record_flow(sk);
/* We may need to bind the socket. */
if (!inet_sk(sk)->inet_num && !sk->sk_prot->no_autobind &&
inet_autobind(sk))
return -EAGAIN;
if (sk->sk_prot->sendpage)
return sk->sk_prot->sendpage(sk, page, offset, size, flags);
return sock_no_sendpage(sock, page, offset, size, flags);
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,050 | int inet_shutdown(struct socket *sock, int how)
{
struct sock *sk = sock->sk;
int err = 0;
/* This should really check to make sure
* the socket is a TCP socket. (WHY AC...)
*/
how++; /* maps 0->1 has the advantage of making bit 1 rcvs and
1->2 bit 2 snds.
2->3 */
if ((how & ~SHUTDOWN_MASK) || !how) /* MAXINT->0 */
return -EINVAL;
lock_sock(sk);
if (sock->state == SS_CONNECTING) {
if ((1 << sk->sk_state) &
(TCPF_SYN_SENT | TCPF_SYN_RECV | TCPF_CLOSE))
sock->state = SS_DISCONNECTING;
else
sock->state = SS_CONNECTED;
}
switch (sk->sk_state) {
case TCP_CLOSE:
err = -ENOTCONN;
/* Hack to wake up other listeners, who can poll for
POLLHUP, even on eg. unconnected UDP sockets -- RR */
default:
sk->sk_shutdown |= how;
if (sk->sk_prot->shutdown)
sk->sk_prot->shutdown(sk, how);
break;
/* Remaining two branches are temporary solution for missing
* close() in multithreaded environment. It is _not_ a good idea,
* but we have no choice until close() is repaired at VFS level.
*/
case TCP_LISTEN:
if (!(how & RCV_SHUTDOWN))
break;
/* Fall through */
case TCP_SYN_SENT:
err = sk->sk_prot->disconnect(sk, O_NONBLOCK);
sock->state = err ? SS_DISCONNECTING : SS_UNCONNECTED;
break;
}
/* Wake up anyone sleeping in poll. */
sk->sk_state_change(sk);
release_sock(sk);
return err;
}
| DoS | 0 | int inet_shutdown(struct socket *sock, int how)
{
struct sock *sk = sock->sk;
int err = 0;
/* This should really check to make sure
* the socket is a TCP socket. (WHY AC...)
*/
how++; /* maps 0->1 has the advantage of making bit 1 rcvs and
1->2 bit 2 snds.
2->3 */
if ((how & ~SHUTDOWN_MASK) || !how) /* MAXINT->0 */
return -EINVAL;
lock_sock(sk);
if (sock->state == SS_CONNECTING) {
if ((1 << sk->sk_state) &
(TCPF_SYN_SENT | TCPF_SYN_RECV | TCPF_CLOSE))
sock->state = SS_DISCONNECTING;
else
sock->state = SS_CONNECTED;
}
switch (sk->sk_state) {
case TCP_CLOSE:
err = -ENOTCONN;
/* Hack to wake up other listeners, who can poll for
POLLHUP, even on eg. unconnected UDP sockets -- RR */
default:
sk->sk_shutdown |= how;
if (sk->sk_prot->shutdown)
sk->sk_prot->shutdown(sk, how);
break;
/* Remaining two branches are temporary solution for missing
* close() in multithreaded environment. It is _not_ a good idea,
* but we have no choice until close() is repaired at VFS level.
*/
case TCP_LISTEN:
if (!(how & RCV_SHUTDOWN))
break;
/* Fall through */
case TCP_SYN_SENT:
err = sk->sk_prot->disconnect(sk, O_NONBLOCK);
sock->state = err ? SS_DISCONNECTING : SS_UNCONNECTED;
break;
}
/* Wake up anyone sleeping in poll. */
sk->sk_state_change(sk);
release_sock(sk);
return err;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,051 | int inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
int addr_len, int flags)
{
struct sock *sk = sock->sk;
int err;
long timeo;
if (addr_len < sizeof(uaddr->sa_family))
return -EINVAL;
lock_sock(sk);
if (uaddr->sa_family == AF_UNSPEC) {
err = sk->sk_prot->disconnect(sk, flags);
sock->state = err ? SS_DISCONNECTING : SS_UNCONNECTED;
goto out;
}
switch (sock->state) {
default:
err = -EINVAL;
goto out;
case SS_CONNECTED:
err = -EISCONN;
goto out;
case SS_CONNECTING:
err = -EALREADY;
/* Fall out of switch with err, set for this state */
break;
case SS_UNCONNECTED:
err = -EISCONN;
if (sk->sk_state != TCP_CLOSE)
goto out;
err = sk->sk_prot->connect(sk, uaddr, addr_len);
if (err < 0)
goto out;
sock->state = SS_CONNECTING;
/* Just entered SS_CONNECTING state; the only
* difference is that return value in non-blocking
* case is EINPROGRESS, rather than EALREADY.
*/
err = -EINPROGRESS;
break;
}
timeo = sock_sndtimeo(sk, flags & O_NONBLOCK);
if ((1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV)) {
/* Error code is set above */
if (!timeo || !inet_wait_for_connect(sk, timeo))
goto out;
err = sock_intr_errno(timeo);
if (signal_pending(current))
goto out;
}
/* Connection was closed by RST, timeout, ICMP error
* or another process disconnected us.
*/
if (sk->sk_state == TCP_CLOSE)
goto sock_error;
/* sk->sk_err may be not zero now, if RECVERR was ordered by user
* and error was received after socket entered established state.
* Hence, it is handled normally after connect() return successfully.
*/
sock->state = SS_CONNECTED;
err = 0;
out:
release_sock(sk);
return err;
sock_error:
err = sock_error(sk) ? : -ECONNABORTED;
sock->state = SS_UNCONNECTED;
if (sk->sk_prot->disconnect(sk, flags))
sock->state = SS_DISCONNECTING;
goto out;
}
| DoS | 0 | int inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
int addr_len, int flags)
{
struct sock *sk = sock->sk;
int err;
long timeo;
if (addr_len < sizeof(uaddr->sa_family))
return -EINVAL;
lock_sock(sk);
if (uaddr->sa_family == AF_UNSPEC) {
err = sk->sk_prot->disconnect(sk, flags);
sock->state = err ? SS_DISCONNECTING : SS_UNCONNECTED;
goto out;
}
switch (sock->state) {
default:
err = -EINVAL;
goto out;
case SS_CONNECTED:
err = -EISCONN;
goto out;
case SS_CONNECTING:
err = -EALREADY;
/* Fall out of switch with err, set for this state */
break;
case SS_UNCONNECTED:
err = -EISCONN;
if (sk->sk_state != TCP_CLOSE)
goto out;
err = sk->sk_prot->connect(sk, uaddr, addr_len);
if (err < 0)
goto out;
sock->state = SS_CONNECTING;
/* Just entered SS_CONNECTING state; the only
* difference is that return value in non-blocking
* case is EINPROGRESS, rather than EALREADY.
*/
err = -EINPROGRESS;
break;
}
timeo = sock_sndtimeo(sk, flags & O_NONBLOCK);
if ((1 << sk->sk_state) & (TCPF_SYN_SENT | TCPF_SYN_RECV)) {
/* Error code is set above */
if (!timeo || !inet_wait_for_connect(sk, timeo))
goto out;
err = sock_intr_errno(timeo);
if (signal_pending(current))
goto out;
}
/* Connection was closed by RST, timeout, ICMP error
* or another process disconnected us.
*/
if (sk->sk_state == TCP_CLOSE)
goto sock_error;
/* sk->sk_err may be not zero now, if RECVERR was ordered by user
* and error was received after socket entered established state.
* Hence, it is handled normally after connect() return successfully.
*/
sock->state = SS_CONNECTED;
err = 0;
out:
release_sock(sk);
return err;
sock_error:
err = sock_error(sk) ? : -ECONNABORTED;
sock->state = SS_UNCONNECTED;
if (sk->sk_prot->disconnect(sk, flags))
sock->state = SS_DISCONNECTING;
goto out;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,052 | void inet_unregister_protosw(struct inet_protosw *p)
{
if (INET_PROTOSW_PERMANENT & p->flags) {
printk(KERN_ERR
"Attempt to unregister permanent protocol %d.\n",
p->protocol);
} else {
spin_lock_bh(&inetsw_lock);
list_del_rcu(&p->list);
spin_unlock_bh(&inetsw_lock);
synchronize_net();
}
}
| DoS | 0 | void inet_unregister_protosw(struct inet_protosw *p)
{
if (INET_PROTOSW_PERMANENT & p->flags) {
printk(KERN_ERR
"Attempt to unregister permanent protocol %d.\n",
p->protocol);
} else {
spin_lock_bh(&inetsw_lock);
list_del_rcu(&p->list);
spin_unlock_bh(&inetsw_lock);
synchronize_net();
}
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,053 | static __net_exit void ipv4_mib_exit_net(struct net *net)
{
snmp_mib_free((void __percpu **)net->mib.icmpmsg_statistics);
snmp_mib_free((void __percpu **)net->mib.icmp_statistics);
snmp_mib_free((void __percpu **)net->mib.udplite_statistics);
snmp_mib_free((void __percpu **)net->mib.udp_statistics);
snmp_mib_free((void __percpu **)net->mib.net_statistics);
snmp_mib_free((void __percpu **)net->mib.ip_statistics);
snmp_mib_free((void __percpu **)net->mib.tcp_statistics);
}
| DoS | 0 | static __net_exit void ipv4_mib_exit_net(struct net *net)
{
snmp_mib_free((void __percpu **)net->mib.icmpmsg_statistics);
snmp_mib_free((void __percpu **)net->mib.icmp_statistics);
snmp_mib_free((void __percpu **)net->mib.udplite_statistics);
snmp_mib_free((void __percpu **)net->mib.udp_statistics);
snmp_mib_free((void __percpu **)net->mib.net_statistics);
snmp_mib_free((void __percpu **)net->mib.ip_statistics);
snmp_mib_free((void __percpu **)net->mib.tcp_statistics);
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,054 | static __net_init int ipv4_mib_init_net(struct net *net)
{
if (snmp_mib_init((void __percpu **)net->mib.tcp_statistics,
sizeof(struct tcp_mib),
__alignof__(struct tcp_mib)) < 0)
goto err_tcp_mib;
if (snmp_mib_init((void __percpu **)net->mib.ip_statistics,
sizeof(struct ipstats_mib),
__alignof__(struct ipstats_mib)) < 0)
goto err_ip_mib;
if (snmp_mib_init((void __percpu **)net->mib.net_statistics,
sizeof(struct linux_mib),
__alignof__(struct linux_mib)) < 0)
goto err_net_mib;
if (snmp_mib_init((void __percpu **)net->mib.udp_statistics,
sizeof(struct udp_mib),
__alignof__(struct udp_mib)) < 0)
goto err_udp_mib;
if (snmp_mib_init((void __percpu **)net->mib.udplite_statistics,
sizeof(struct udp_mib),
__alignof__(struct udp_mib)) < 0)
goto err_udplite_mib;
if (snmp_mib_init((void __percpu **)net->mib.icmp_statistics,
sizeof(struct icmp_mib),
__alignof__(struct icmp_mib)) < 0)
goto err_icmp_mib;
if (snmp_mib_init((void __percpu **)net->mib.icmpmsg_statistics,
sizeof(struct icmpmsg_mib),
__alignof__(struct icmpmsg_mib)) < 0)
goto err_icmpmsg_mib;
tcp_mib_init(net);
return 0;
err_icmpmsg_mib:
snmp_mib_free((void __percpu **)net->mib.icmp_statistics);
err_icmp_mib:
snmp_mib_free((void __percpu **)net->mib.udplite_statistics);
err_udplite_mib:
snmp_mib_free((void __percpu **)net->mib.udp_statistics);
err_udp_mib:
snmp_mib_free((void __percpu **)net->mib.net_statistics);
err_net_mib:
snmp_mib_free((void __percpu **)net->mib.ip_statistics);
err_ip_mib:
snmp_mib_free((void __percpu **)net->mib.tcp_statistics);
err_tcp_mib:
return -ENOMEM;
}
| DoS | 0 | static __net_init int ipv4_mib_init_net(struct net *net)
{
if (snmp_mib_init((void __percpu **)net->mib.tcp_statistics,
sizeof(struct tcp_mib),
__alignof__(struct tcp_mib)) < 0)
goto err_tcp_mib;
if (snmp_mib_init((void __percpu **)net->mib.ip_statistics,
sizeof(struct ipstats_mib),
__alignof__(struct ipstats_mib)) < 0)
goto err_ip_mib;
if (snmp_mib_init((void __percpu **)net->mib.net_statistics,
sizeof(struct linux_mib),
__alignof__(struct linux_mib)) < 0)
goto err_net_mib;
if (snmp_mib_init((void __percpu **)net->mib.udp_statistics,
sizeof(struct udp_mib),
__alignof__(struct udp_mib)) < 0)
goto err_udp_mib;
if (snmp_mib_init((void __percpu **)net->mib.udplite_statistics,
sizeof(struct udp_mib),
__alignof__(struct udp_mib)) < 0)
goto err_udplite_mib;
if (snmp_mib_init((void __percpu **)net->mib.icmp_statistics,
sizeof(struct icmp_mib),
__alignof__(struct icmp_mib)) < 0)
goto err_icmp_mib;
if (snmp_mib_init((void __percpu **)net->mib.icmpmsg_statistics,
sizeof(struct icmpmsg_mib),
__alignof__(struct icmpmsg_mib)) < 0)
goto err_icmpmsg_mib;
tcp_mib_init(net);
return 0;
err_icmpmsg_mib:
snmp_mib_free((void __percpu **)net->mib.icmp_statistics);
err_icmp_mib:
snmp_mib_free((void __percpu **)net->mib.udplite_statistics);
err_udplite_mib:
snmp_mib_free((void __percpu **)net->mib.udp_statistics);
err_udp_mib:
snmp_mib_free((void __percpu **)net->mib.net_statistics);
err_net_mib:
snmp_mib_free((void __percpu **)net->mib.ip_statistics);
err_ip_mib:
snmp_mib_free((void __percpu **)net->mib.tcp_statistics);
err_tcp_mib:
return -ENOMEM;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,055 | static int __init ipv4_proc_init(void)
{
int rc = 0;
if (raw_proc_init())
goto out_raw;
if (tcp4_proc_init())
goto out_tcp;
if (udp4_proc_init())
goto out_udp;
if (ip_misc_proc_init())
goto out_misc;
out:
return rc;
out_misc:
udp4_proc_exit();
out_udp:
tcp4_proc_exit();
out_tcp:
raw_proc_exit();
out_raw:
rc = -ENOMEM;
goto out;
}
| DoS | 0 | static int __init ipv4_proc_init(void)
{
int rc = 0;
if (raw_proc_init())
goto out_raw;
if (tcp4_proc_init())
goto out_tcp;
if (udp4_proc_init())
goto out_udp;
if (ip_misc_proc_init())
goto out_misc;
out:
return rc;
out_misc:
udp4_proc_exit();
out_udp:
tcp4_proc_exit();
out_tcp:
raw_proc_exit();
out_raw:
rc = -ENOMEM;
goto out;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,056 | static int __init ipv4_proc_init(void)
{
return 0;
}
| DoS | 0 | static int __init ipv4_proc_init(void)
{
return 0;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,057 | unsigned long snmp_fold_field(void __percpu *mib[], int offt)
{
unsigned long res = 0;
int i;
for_each_possible_cpu(i) {
res += *(((unsigned long *) per_cpu_ptr(mib[0], i)) + offt);
res += *(((unsigned long *) per_cpu_ptr(mib[1], i)) + offt);
}
return res;
}
| DoS | 0 | unsigned long snmp_fold_field(void __percpu *mib[], int offt)
{
unsigned long res = 0;
int i;
for_each_possible_cpu(i) {
res += *(((unsigned long *) per_cpu_ptr(mib[0], i)) + offt);
res += *(((unsigned long *) per_cpu_ptr(mib[1], i)) + offt);
}
return res;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,058 | u64 snmp_fold_field64(void __percpu *mib[], int offt, size_t syncp_offset)
{
u64 res = 0;
int cpu;
for_each_possible_cpu(cpu) {
void *bhptr, *userptr;
struct u64_stats_sync *syncp;
u64 v_bh, v_user;
unsigned int start;
/* first mib used by softirq context, we must use _bh() accessors */
bhptr = per_cpu_ptr(SNMP_STAT_BHPTR(mib), cpu);
syncp = (struct u64_stats_sync *)(bhptr + syncp_offset);
do {
start = u64_stats_fetch_begin_bh(syncp);
v_bh = *(((u64 *) bhptr) + offt);
} while (u64_stats_fetch_retry_bh(syncp, start));
/* second mib used in USER context */
userptr = per_cpu_ptr(SNMP_STAT_USRPTR(mib), cpu);
syncp = (struct u64_stats_sync *)(userptr + syncp_offset);
do {
start = u64_stats_fetch_begin(syncp);
v_user = *(((u64 *) userptr) + offt);
} while (u64_stats_fetch_retry(syncp, start));
res += v_bh + v_user;
}
return res;
}
| DoS | 0 | u64 snmp_fold_field64(void __percpu *mib[], int offt, size_t syncp_offset)
{
u64 res = 0;
int cpu;
for_each_possible_cpu(cpu) {
void *bhptr, *userptr;
struct u64_stats_sync *syncp;
u64 v_bh, v_user;
unsigned int start;
/* first mib used by softirq context, we must use _bh() accessors */
bhptr = per_cpu_ptr(SNMP_STAT_BHPTR(mib), cpu);
syncp = (struct u64_stats_sync *)(bhptr + syncp_offset);
do {
start = u64_stats_fetch_begin_bh(syncp);
v_bh = *(((u64 *) bhptr) + offt);
} while (u64_stats_fetch_retry_bh(syncp, start));
/* second mib used in USER context */
userptr = per_cpu_ptr(SNMP_STAT_USRPTR(mib), cpu);
syncp = (struct u64_stats_sync *)(userptr + syncp_offset);
do {
start = u64_stats_fetch_begin(syncp);
v_user = *(((u64 *) userptr) + offt);
} while (u64_stats_fetch_retry(syncp, start));
res += v_bh + v_user;
}
return res;
}
| @@ -153,7 +153,7 @@ void inet_sock_destruct(struct sock *sk)
WARN_ON(sk->sk_wmem_queued);
WARN_ON(sk->sk_forward_alloc);
- kfree(inet->opt);
+ kfree(rcu_dereference_protected(inet->inet_opt, 1));
dst_release(rcu_dereference_check(sk->sk_dst_cache, 1));
sk_refcnt_debug_dec(sk);
}
@@ -1106,9 +1106,12 @@ static int inet_sk_reselect_saddr(struct sock *sk)
struct flowi4 fl4;
struct rtable *rt;
__be32 new_saddr;
+ struct ip_options_rcu *inet_opt;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ inet_opt = rcu_dereference_protected(inet->inet_opt,
+ sock_owned_by_user(sk));
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
/* Query new route. */
rt = ip_route_connect(&fl4, daddr, 0, RT_CONN_FLAGS(sk),
@@ -1148,16 +1151,20 @@ int inet_sk_rebuild_header(struct sock *sk)
struct inet_sock *inet = inet_sk(sk);
struct rtable *rt = (struct rtable *)__sk_dst_check(sk, 0);
__be32 daddr;
+ struct ip_options_rcu *inet_opt;
int err;
/* Route is OK, nothing to do. */
if (rt)
return 0;
/* Reroute. */
+ rcu_read_lock();
+ inet_opt = rcu_dereference(inet->inet_opt);
daddr = inet->inet_daddr;
- if (inet->opt && inet->opt->srr)
- daddr = inet->opt->faddr;
+ if (inet_opt && inet_opt->opt.srr)
+ daddr = inet_opt->opt.faddr;
+ rcu_read_unlock();
rt = ip_route_output_ports(sock_net(sk), sk, daddr, inet->inet_saddr,
inet->inet_dport, inet->inet_sport,
sk->sk_protocol, RT_CONN_FLAGS(sk), | CWE-362 | null | null |
15,059 | static void cipso_v4_bitmap_setbit(unsigned char *bitmap,
u32 bit,
u8 state)
{
u32 byte_spot;
u8 bitmask;
/* gcc always rounds to zero when doing integer division */
byte_spot = bit / 8;
bitmask = 0x80 >> (bit % 8);
if (state)
bitmap[byte_spot] |= bitmask;
else
bitmap[byte_spot] &= ~bitmask;
}
| DoS | 0 | static void cipso_v4_bitmap_setbit(unsigned char *bitmap,
u32 bit,
u8 state)
{
u32 byte_spot;
u8 bitmask;
/* gcc always rounds to zero when doing integer division */
byte_spot = bit / 8;
bitmask = 0x80 >> (bit % 8);
if (state)
bitmap[byte_spot] |= bitmask;
else
bitmap[byte_spot] &= ~bitmask;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,060 | static int cipso_v4_bitmap_walk(const unsigned char *bitmap,
u32 bitmap_len,
u32 offset,
u8 state)
{
u32 bit_spot;
u32 byte_offset;
unsigned char bitmask;
unsigned char byte;
/* gcc always rounds to zero when doing integer division */
byte_offset = offset / 8;
byte = bitmap[byte_offset];
bit_spot = offset;
bitmask = 0x80 >> (offset % 8);
while (bit_spot < bitmap_len) {
if ((state && (byte & bitmask) == bitmask) ||
(state == 0 && (byte & bitmask) == 0))
return bit_spot;
bit_spot++;
bitmask >>= 1;
if (bitmask == 0) {
byte = bitmap[++byte_offset];
bitmask = 0x80;
}
}
return -1;
}
| DoS | 0 | static int cipso_v4_bitmap_walk(const unsigned char *bitmap,
u32 bitmap_len,
u32 offset,
u8 state)
{
u32 bit_spot;
u32 byte_offset;
unsigned char bitmask;
unsigned char byte;
/* gcc always rounds to zero when doing integer division */
byte_offset = offset / 8;
byte = bitmap[byte_offset];
bit_spot = offset;
bitmask = 0x80 >> (offset % 8);
while (bit_spot < bitmap_len) {
if ((state && (byte & bitmask) == bitmask) ||
(state == 0 && (byte & bitmask) == 0))
return bit_spot;
bit_spot++;
bitmask >>= 1;
if (bitmask == 0) {
byte = bitmap[++byte_offset];
bitmask = 0x80;
}
}
return -1;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,061 | int cipso_v4_cache_add(const struct sk_buff *skb,
const struct netlbl_lsm_secattr *secattr)
{
int ret_val = -EPERM;
u32 bkt;
struct cipso_v4_map_cache_entry *entry = NULL;
struct cipso_v4_map_cache_entry *old_entry = NULL;
unsigned char *cipso_ptr;
u32 cipso_ptr_len;
if (!cipso_v4_cache_enabled || cipso_v4_cache_bucketsize <= 0)
return 0;
cipso_ptr = CIPSO_V4_OPTPTR(skb);
cipso_ptr_len = cipso_ptr[1];
entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
if (entry == NULL)
return -ENOMEM;
entry->key = kmemdup(cipso_ptr, cipso_ptr_len, GFP_ATOMIC);
if (entry->key == NULL) {
ret_val = -ENOMEM;
goto cache_add_failure;
}
entry->key_len = cipso_ptr_len;
entry->hash = cipso_v4_map_cache_hash(cipso_ptr, cipso_ptr_len);
atomic_inc(&secattr->cache->refcount);
entry->lsm_data = secattr->cache;
bkt = entry->hash & (CIPSO_V4_CACHE_BUCKETS - 1);
spin_lock_bh(&cipso_v4_cache[bkt].lock);
if (cipso_v4_cache[bkt].size < cipso_v4_cache_bucketsize) {
list_add(&entry->list, &cipso_v4_cache[bkt].list);
cipso_v4_cache[bkt].size += 1;
} else {
old_entry = list_entry(cipso_v4_cache[bkt].list.prev,
struct cipso_v4_map_cache_entry, list);
list_del(&old_entry->list);
list_add(&entry->list, &cipso_v4_cache[bkt].list);
cipso_v4_cache_entry_free(old_entry);
}
spin_unlock_bh(&cipso_v4_cache[bkt].lock);
return 0;
cache_add_failure:
if (entry)
cipso_v4_cache_entry_free(entry);
return ret_val;
}
| DoS | 0 | int cipso_v4_cache_add(const struct sk_buff *skb,
const struct netlbl_lsm_secattr *secattr)
{
int ret_val = -EPERM;
u32 bkt;
struct cipso_v4_map_cache_entry *entry = NULL;
struct cipso_v4_map_cache_entry *old_entry = NULL;
unsigned char *cipso_ptr;
u32 cipso_ptr_len;
if (!cipso_v4_cache_enabled || cipso_v4_cache_bucketsize <= 0)
return 0;
cipso_ptr = CIPSO_V4_OPTPTR(skb);
cipso_ptr_len = cipso_ptr[1];
entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
if (entry == NULL)
return -ENOMEM;
entry->key = kmemdup(cipso_ptr, cipso_ptr_len, GFP_ATOMIC);
if (entry->key == NULL) {
ret_val = -ENOMEM;
goto cache_add_failure;
}
entry->key_len = cipso_ptr_len;
entry->hash = cipso_v4_map_cache_hash(cipso_ptr, cipso_ptr_len);
atomic_inc(&secattr->cache->refcount);
entry->lsm_data = secattr->cache;
bkt = entry->hash & (CIPSO_V4_CACHE_BUCKETS - 1);
spin_lock_bh(&cipso_v4_cache[bkt].lock);
if (cipso_v4_cache[bkt].size < cipso_v4_cache_bucketsize) {
list_add(&entry->list, &cipso_v4_cache[bkt].list);
cipso_v4_cache[bkt].size += 1;
} else {
old_entry = list_entry(cipso_v4_cache[bkt].list.prev,
struct cipso_v4_map_cache_entry, list);
list_del(&old_entry->list);
list_add(&entry->list, &cipso_v4_cache[bkt].list);
cipso_v4_cache_entry_free(old_entry);
}
spin_unlock_bh(&cipso_v4_cache[bkt].lock);
return 0;
cache_add_failure:
if (entry)
cipso_v4_cache_entry_free(entry);
return ret_val;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,062 | static int cipso_v4_cache_check(const unsigned char *key,
u32 key_len,
struct netlbl_lsm_secattr *secattr)
{
u32 bkt;
struct cipso_v4_map_cache_entry *entry;
struct cipso_v4_map_cache_entry *prev_entry = NULL;
u32 hash;
if (!cipso_v4_cache_enabled)
return -ENOENT;
hash = cipso_v4_map_cache_hash(key, key_len);
bkt = hash & (CIPSO_V4_CACHE_BUCKETS - 1);
spin_lock_bh(&cipso_v4_cache[bkt].lock);
list_for_each_entry(entry, &cipso_v4_cache[bkt].list, list) {
if (entry->hash == hash &&
entry->key_len == key_len &&
memcmp(entry->key, key, key_len) == 0) {
entry->activity += 1;
atomic_inc(&entry->lsm_data->refcount);
secattr->cache = entry->lsm_data;
secattr->flags |= NETLBL_SECATTR_CACHE;
secattr->type = NETLBL_NLTYPE_CIPSOV4;
if (prev_entry == NULL) {
spin_unlock_bh(&cipso_v4_cache[bkt].lock);
return 0;
}
if (prev_entry->activity > 0)
prev_entry->activity -= 1;
if (entry->activity > prev_entry->activity &&
entry->activity - prev_entry->activity >
CIPSO_V4_CACHE_REORDERLIMIT) {
__list_del(entry->list.prev, entry->list.next);
__list_add(&entry->list,
prev_entry->list.prev,
&prev_entry->list);
}
spin_unlock_bh(&cipso_v4_cache[bkt].lock);
return 0;
}
prev_entry = entry;
}
spin_unlock_bh(&cipso_v4_cache[bkt].lock);
return -ENOENT;
}
| DoS | 0 | static int cipso_v4_cache_check(const unsigned char *key,
u32 key_len,
struct netlbl_lsm_secattr *secattr)
{
u32 bkt;
struct cipso_v4_map_cache_entry *entry;
struct cipso_v4_map_cache_entry *prev_entry = NULL;
u32 hash;
if (!cipso_v4_cache_enabled)
return -ENOENT;
hash = cipso_v4_map_cache_hash(key, key_len);
bkt = hash & (CIPSO_V4_CACHE_BUCKETS - 1);
spin_lock_bh(&cipso_v4_cache[bkt].lock);
list_for_each_entry(entry, &cipso_v4_cache[bkt].list, list) {
if (entry->hash == hash &&
entry->key_len == key_len &&
memcmp(entry->key, key, key_len) == 0) {
entry->activity += 1;
atomic_inc(&entry->lsm_data->refcount);
secattr->cache = entry->lsm_data;
secattr->flags |= NETLBL_SECATTR_CACHE;
secattr->type = NETLBL_NLTYPE_CIPSOV4;
if (prev_entry == NULL) {
spin_unlock_bh(&cipso_v4_cache[bkt].lock);
return 0;
}
if (prev_entry->activity > 0)
prev_entry->activity -= 1;
if (entry->activity > prev_entry->activity &&
entry->activity - prev_entry->activity >
CIPSO_V4_CACHE_REORDERLIMIT) {
__list_del(entry->list.prev, entry->list.next);
__list_add(&entry->list,
prev_entry->list.prev,
&prev_entry->list);
}
spin_unlock_bh(&cipso_v4_cache[bkt].lock);
return 0;
}
prev_entry = entry;
}
spin_unlock_bh(&cipso_v4_cache[bkt].lock);
return -ENOENT;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,063 | static void cipso_v4_cache_entry_free(struct cipso_v4_map_cache_entry *entry)
{
if (entry->lsm_data)
netlbl_secattr_cache_free(entry->lsm_data);
kfree(entry->key);
kfree(entry);
}
| DoS | 0 | static void cipso_v4_cache_entry_free(struct cipso_v4_map_cache_entry *entry)
{
if (entry->lsm_data)
netlbl_secattr_cache_free(entry->lsm_data);
kfree(entry->key);
kfree(entry);
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,064 | static int cipso_v4_cache_init(void)
{
u32 iter;
cipso_v4_cache = kcalloc(CIPSO_V4_CACHE_BUCKETS,
sizeof(struct cipso_v4_map_cache_bkt),
GFP_KERNEL);
if (cipso_v4_cache == NULL)
return -ENOMEM;
for (iter = 0; iter < CIPSO_V4_CACHE_BUCKETS; iter++) {
spin_lock_init(&cipso_v4_cache[iter].lock);
cipso_v4_cache[iter].size = 0;
INIT_LIST_HEAD(&cipso_v4_cache[iter].list);
}
return 0;
}
| DoS | 0 | static int cipso_v4_cache_init(void)
{
u32 iter;
cipso_v4_cache = kcalloc(CIPSO_V4_CACHE_BUCKETS,
sizeof(struct cipso_v4_map_cache_bkt),
GFP_KERNEL);
if (cipso_v4_cache == NULL)
return -ENOMEM;
for (iter = 0; iter < CIPSO_V4_CACHE_BUCKETS; iter++) {
spin_lock_init(&cipso_v4_cache[iter].lock);
cipso_v4_cache[iter].size = 0;
INIT_LIST_HEAD(&cipso_v4_cache[iter].list);
}
return 0;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,065 | void cipso_v4_doi_free(struct cipso_v4_doi *doi_def)
{
if (doi_def == NULL)
return;
switch (doi_def->type) {
case CIPSO_V4_MAP_TRANS:
kfree(doi_def->map.std->lvl.cipso);
kfree(doi_def->map.std->lvl.local);
kfree(doi_def->map.std->cat.cipso);
kfree(doi_def->map.std->cat.local);
break;
}
kfree(doi_def);
}
| DoS | 0 | void cipso_v4_doi_free(struct cipso_v4_doi *doi_def)
{
if (doi_def == NULL)
return;
switch (doi_def->type) {
case CIPSO_V4_MAP_TRANS:
kfree(doi_def->map.std->lvl.cipso);
kfree(doi_def->map.std->lvl.local);
kfree(doi_def->map.std->cat.cipso);
kfree(doi_def->map.std->cat.local);
break;
}
kfree(doi_def);
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,066 | static void cipso_v4_doi_free_rcu(struct rcu_head *entry)
{
struct cipso_v4_doi *doi_def;
doi_def = container_of(entry, struct cipso_v4_doi, rcu);
cipso_v4_doi_free(doi_def);
}
| DoS | 0 | static void cipso_v4_doi_free_rcu(struct rcu_head *entry)
{
struct cipso_v4_doi *doi_def;
doi_def = container_of(entry, struct cipso_v4_doi, rcu);
cipso_v4_doi_free(doi_def);
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,067 | struct cipso_v4_doi *cipso_v4_doi_getdef(u32 doi)
{
struct cipso_v4_doi *doi_def;
rcu_read_lock();
doi_def = cipso_v4_doi_search(doi);
if (doi_def == NULL)
goto doi_getdef_return;
if (!atomic_inc_not_zero(&doi_def->refcount))
doi_def = NULL;
doi_getdef_return:
rcu_read_unlock();
return doi_def;
}
| DoS | 0 | struct cipso_v4_doi *cipso_v4_doi_getdef(u32 doi)
{
struct cipso_v4_doi *doi_def;
rcu_read_lock();
doi_def = cipso_v4_doi_search(doi);
if (doi_def == NULL)
goto doi_getdef_return;
if (!atomic_inc_not_zero(&doi_def->refcount))
doi_def = NULL;
doi_getdef_return:
rcu_read_unlock();
return doi_def;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,068 | void cipso_v4_doi_putdef(struct cipso_v4_doi *doi_def)
{
if (doi_def == NULL)
return;
if (!atomic_dec_and_test(&doi_def->refcount))
return;
spin_lock(&cipso_v4_doi_list_lock);
list_del_rcu(&doi_def->list);
spin_unlock(&cipso_v4_doi_list_lock);
cipso_v4_cache_invalidate();
call_rcu(&doi_def->rcu, cipso_v4_doi_free_rcu);
}
| DoS | 0 | void cipso_v4_doi_putdef(struct cipso_v4_doi *doi_def)
{
if (doi_def == NULL)
return;
if (!atomic_dec_and_test(&doi_def->refcount))
return;
spin_lock(&cipso_v4_doi_list_lock);
list_del_rcu(&doi_def->list);
spin_unlock(&cipso_v4_doi_list_lock);
cipso_v4_cache_invalidate();
call_rcu(&doi_def->rcu, cipso_v4_doi_free_rcu);
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,069 | int cipso_v4_doi_remove(u32 doi, struct netlbl_audit *audit_info)
{
int ret_val;
struct cipso_v4_doi *doi_def;
struct audit_buffer *audit_buf;
spin_lock(&cipso_v4_doi_list_lock);
doi_def = cipso_v4_doi_search(doi);
if (doi_def == NULL) {
spin_unlock(&cipso_v4_doi_list_lock);
ret_val = -ENOENT;
goto doi_remove_return;
}
if (!atomic_dec_and_test(&doi_def->refcount)) {
spin_unlock(&cipso_v4_doi_list_lock);
ret_val = -EBUSY;
goto doi_remove_return;
}
list_del_rcu(&doi_def->list);
spin_unlock(&cipso_v4_doi_list_lock);
cipso_v4_cache_invalidate();
call_rcu(&doi_def->rcu, cipso_v4_doi_free_rcu);
ret_val = 0;
doi_remove_return:
audit_buf = netlbl_audit_start(AUDIT_MAC_CIPSOV4_DEL, audit_info);
if (audit_buf != NULL) {
audit_log_format(audit_buf,
" cipso_doi=%u res=%u",
doi, ret_val == 0 ? 1 : 0);
audit_log_end(audit_buf);
}
return ret_val;
}
| DoS | 0 | int cipso_v4_doi_remove(u32 doi, struct netlbl_audit *audit_info)
{
int ret_val;
struct cipso_v4_doi *doi_def;
struct audit_buffer *audit_buf;
spin_lock(&cipso_v4_doi_list_lock);
doi_def = cipso_v4_doi_search(doi);
if (doi_def == NULL) {
spin_unlock(&cipso_v4_doi_list_lock);
ret_val = -ENOENT;
goto doi_remove_return;
}
if (!atomic_dec_and_test(&doi_def->refcount)) {
spin_unlock(&cipso_v4_doi_list_lock);
ret_val = -EBUSY;
goto doi_remove_return;
}
list_del_rcu(&doi_def->list);
spin_unlock(&cipso_v4_doi_list_lock);
cipso_v4_cache_invalidate();
call_rcu(&doi_def->rcu, cipso_v4_doi_free_rcu);
ret_val = 0;
doi_remove_return:
audit_buf = netlbl_audit_start(AUDIT_MAC_CIPSOV4_DEL, audit_info);
if (audit_buf != NULL) {
audit_log_format(audit_buf,
" cipso_doi=%u res=%u",
doi, ret_val == 0 ? 1 : 0);
audit_log_end(audit_buf);
}
return ret_val;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,070 | static struct cipso_v4_doi *cipso_v4_doi_search(u32 doi)
{
struct cipso_v4_doi *iter;
list_for_each_entry_rcu(iter, &cipso_v4_doi_list, list)
if (iter->doi == doi && atomic_read(&iter->refcount))
return iter;
return NULL;
}
| DoS | 0 | static struct cipso_v4_doi *cipso_v4_doi_search(u32 doi)
{
struct cipso_v4_doi *iter;
list_for_each_entry_rcu(iter, &cipso_v4_doi_list, list)
if (iter->doi == doi && atomic_read(&iter->refcount))
return iter;
return NULL;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,071 | void cipso_v4_error(struct sk_buff *skb, int error, u32 gateway)
{
if (ip_hdr(skb)->protocol == IPPROTO_ICMP || error != -EACCES)
return;
if (gateway)
icmp_send(skb, ICMP_DEST_UNREACH, ICMP_NET_ANO, 0);
else
icmp_send(skb, ICMP_DEST_UNREACH, ICMP_HOST_ANO, 0);
}
| DoS | 0 | void cipso_v4_error(struct sk_buff *skb, int error, u32 gateway)
{
if (ip_hdr(skb)->protocol == IPPROTO_ICMP || error != -EACCES)
return;
if (gateway)
icmp_send(skb, ICMP_DEST_UNREACH, ICMP_NET_ANO, 0);
else
icmp_send(skb, ICMP_DEST_UNREACH, ICMP_HOST_ANO, 0);
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,072 | static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr)
{
int ret_val;
u32 iter;
if (buf_len <= CIPSO_V4_HDR_LEN)
return -ENOSPC;
/* XXX - This code assumes only one tag per CIPSO option which isn't
* really a good assumption to make but since we only support the MAC
* tags right now it is a safe assumption. */
iter = 0;
do {
memset(buf, 0, buf_len);
switch (doi_def->tags[iter]) {
case CIPSO_V4_TAG_RBITMAP:
ret_val = cipso_v4_gentag_rbm(doi_def,
secattr,
&buf[CIPSO_V4_HDR_LEN],
buf_len - CIPSO_V4_HDR_LEN);
break;
case CIPSO_V4_TAG_ENUM:
ret_val = cipso_v4_gentag_enum(doi_def,
secattr,
&buf[CIPSO_V4_HDR_LEN],
buf_len - CIPSO_V4_HDR_LEN);
break;
case CIPSO_V4_TAG_RANGE:
ret_val = cipso_v4_gentag_rng(doi_def,
secattr,
&buf[CIPSO_V4_HDR_LEN],
buf_len - CIPSO_V4_HDR_LEN);
break;
case CIPSO_V4_TAG_LOCAL:
ret_val = cipso_v4_gentag_loc(doi_def,
secattr,
&buf[CIPSO_V4_HDR_LEN],
buf_len - CIPSO_V4_HDR_LEN);
break;
default:
return -EPERM;
}
iter++;
} while (ret_val < 0 &&
iter < CIPSO_V4_TAG_MAXCNT &&
doi_def->tags[iter] != CIPSO_V4_TAG_INVALID);
if (ret_val < 0)
return ret_val;
cipso_v4_gentag_hdr(doi_def, buf, ret_val);
return CIPSO_V4_HDR_LEN + ret_val;
}
| DoS | 0 | static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr)
{
int ret_val;
u32 iter;
if (buf_len <= CIPSO_V4_HDR_LEN)
return -ENOSPC;
/* XXX - This code assumes only one tag per CIPSO option which isn't
* really a good assumption to make but since we only support the MAC
* tags right now it is a safe assumption. */
iter = 0;
do {
memset(buf, 0, buf_len);
switch (doi_def->tags[iter]) {
case CIPSO_V4_TAG_RBITMAP:
ret_val = cipso_v4_gentag_rbm(doi_def,
secattr,
&buf[CIPSO_V4_HDR_LEN],
buf_len - CIPSO_V4_HDR_LEN);
break;
case CIPSO_V4_TAG_ENUM:
ret_val = cipso_v4_gentag_enum(doi_def,
secattr,
&buf[CIPSO_V4_HDR_LEN],
buf_len - CIPSO_V4_HDR_LEN);
break;
case CIPSO_V4_TAG_RANGE:
ret_val = cipso_v4_gentag_rng(doi_def,
secattr,
&buf[CIPSO_V4_HDR_LEN],
buf_len - CIPSO_V4_HDR_LEN);
break;
case CIPSO_V4_TAG_LOCAL:
ret_val = cipso_v4_gentag_loc(doi_def,
secattr,
&buf[CIPSO_V4_HDR_LEN],
buf_len - CIPSO_V4_HDR_LEN);
break;
default:
return -EPERM;
}
iter++;
} while (ret_val < 0 &&
iter < CIPSO_V4_TAG_MAXCNT &&
doi_def->tags[iter] != CIPSO_V4_TAG_INVALID);
if (ret_val < 0)
return ret_val;
cipso_v4_gentag_hdr(doi_def, buf, ret_val);
return CIPSO_V4_HDR_LEN + ret_val;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,073 | static int cipso_v4_gentag_enum(const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr,
unsigned char *buffer,
u32 buffer_len)
{
int ret_val;
u32 tag_len;
u32 level;
if (!(secattr->flags & NETLBL_SECATTR_MLS_LVL))
return -EPERM;
ret_val = cipso_v4_map_lvl_hton(doi_def,
secattr->attr.mls.lvl,
&level);
if (ret_val != 0)
return ret_val;
if (secattr->flags & NETLBL_SECATTR_MLS_CAT) {
ret_val = cipso_v4_map_cat_enum_hton(doi_def,
secattr,
&buffer[4],
buffer_len - 4);
if (ret_val < 0)
return ret_val;
tag_len = 4 + ret_val;
} else
tag_len = 4;
buffer[0] = CIPSO_V4_TAG_ENUM;
buffer[1] = tag_len;
buffer[3] = level;
return tag_len;
}
| DoS | 0 | static int cipso_v4_gentag_enum(const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr,
unsigned char *buffer,
u32 buffer_len)
{
int ret_val;
u32 tag_len;
u32 level;
if (!(secattr->flags & NETLBL_SECATTR_MLS_LVL))
return -EPERM;
ret_val = cipso_v4_map_lvl_hton(doi_def,
secattr->attr.mls.lvl,
&level);
if (ret_val != 0)
return ret_val;
if (secattr->flags & NETLBL_SECATTR_MLS_CAT) {
ret_val = cipso_v4_map_cat_enum_hton(doi_def,
secattr,
&buffer[4],
buffer_len - 4);
if (ret_val < 0)
return ret_val;
tag_len = 4 + ret_val;
} else
tag_len = 4;
buffer[0] = CIPSO_V4_TAG_ENUM;
buffer[1] = tag_len;
buffer[3] = level;
return tag_len;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,074 | static int cipso_v4_gentag_loc(const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr,
unsigned char *buffer,
u32 buffer_len)
{
if (!(secattr->flags & NETLBL_SECATTR_SECID))
return -EPERM;
buffer[0] = CIPSO_V4_TAG_LOCAL;
buffer[1] = CIPSO_V4_TAG_LOC_BLEN;
*(u32 *)&buffer[2] = secattr->attr.secid;
return CIPSO_V4_TAG_LOC_BLEN;
}
| DoS | 0 | static int cipso_v4_gentag_loc(const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr,
unsigned char *buffer,
u32 buffer_len)
{
if (!(secattr->flags & NETLBL_SECATTR_SECID))
return -EPERM;
buffer[0] = CIPSO_V4_TAG_LOCAL;
buffer[1] = CIPSO_V4_TAG_LOC_BLEN;
*(u32 *)&buffer[2] = secattr->attr.secid;
return CIPSO_V4_TAG_LOC_BLEN;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,075 | static int cipso_v4_gentag_rbm(const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr,
unsigned char *buffer,
u32 buffer_len)
{
int ret_val;
u32 tag_len;
u32 level;
if ((secattr->flags & NETLBL_SECATTR_MLS_LVL) == 0)
return -EPERM;
ret_val = cipso_v4_map_lvl_hton(doi_def,
secattr->attr.mls.lvl,
&level);
if (ret_val != 0)
return ret_val;
if (secattr->flags & NETLBL_SECATTR_MLS_CAT) {
ret_val = cipso_v4_map_cat_rbm_hton(doi_def,
secattr,
&buffer[4],
buffer_len - 4);
if (ret_val < 0)
return ret_val;
/* This will send packets using the "optimized" format when
* possible as specified in section 3.4.2.6 of the
* CIPSO draft. */
if (cipso_v4_rbm_optfmt && ret_val > 0 && ret_val <= 10)
tag_len = 14;
else
tag_len = 4 + ret_val;
} else
tag_len = 4;
buffer[0] = CIPSO_V4_TAG_RBITMAP;
buffer[1] = tag_len;
buffer[3] = level;
return tag_len;
}
| DoS | 0 | static int cipso_v4_gentag_rbm(const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr,
unsigned char *buffer,
u32 buffer_len)
{
int ret_val;
u32 tag_len;
u32 level;
if ((secattr->flags & NETLBL_SECATTR_MLS_LVL) == 0)
return -EPERM;
ret_val = cipso_v4_map_lvl_hton(doi_def,
secattr->attr.mls.lvl,
&level);
if (ret_val != 0)
return ret_val;
if (secattr->flags & NETLBL_SECATTR_MLS_CAT) {
ret_val = cipso_v4_map_cat_rbm_hton(doi_def,
secattr,
&buffer[4],
buffer_len - 4);
if (ret_val < 0)
return ret_val;
/* This will send packets using the "optimized" format when
* possible as specified in section 3.4.2.6 of the
* CIPSO draft. */
if (cipso_v4_rbm_optfmt && ret_val > 0 && ret_val <= 10)
tag_len = 14;
else
tag_len = 4 + ret_val;
} else
tag_len = 4;
buffer[0] = CIPSO_V4_TAG_RBITMAP;
buffer[1] = tag_len;
buffer[3] = level;
return tag_len;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,076 | static int cipso_v4_gentag_rng(const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr,
unsigned char *buffer,
u32 buffer_len)
{
int ret_val;
u32 tag_len;
u32 level;
if (!(secattr->flags & NETLBL_SECATTR_MLS_LVL))
return -EPERM;
ret_val = cipso_v4_map_lvl_hton(doi_def,
secattr->attr.mls.lvl,
&level);
if (ret_val != 0)
return ret_val;
if (secattr->flags & NETLBL_SECATTR_MLS_CAT) {
ret_val = cipso_v4_map_cat_rng_hton(doi_def,
secattr,
&buffer[4],
buffer_len - 4);
if (ret_val < 0)
return ret_val;
tag_len = 4 + ret_val;
} else
tag_len = 4;
buffer[0] = CIPSO_V4_TAG_RANGE;
buffer[1] = tag_len;
buffer[3] = level;
return tag_len;
}
| DoS | 0 | static int cipso_v4_gentag_rng(const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr,
unsigned char *buffer,
u32 buffer_len)
{
int ret_val;
u32 tag_len;
u32 level;
if (!(secattr->flags & NETLBL_SECATTR_MLS_LVL))
return -EPERM;
ret_val = cipso_v4_map_lvl_hton(doi_def,
secattr->attr.mls.lvl,
&level);
if (ret_val != 0)
return ret_val;
if (secattr->flags & NETLBL_SECATTR_MLS_CAT) {
ret_val = cipso_v4_map_cat_rng_hton(doi_def,
secattr,
&buffer[4],
buffer_len - 4);
if (ret_val < 0)
return ret_val;
tag_len = 4 + ret_val;
} else
tag_len = 4;
buffer[0] = CIPSO_V4_TAG_RANGE;
buffer[1] = tag_len;
buffer[3] = level;
return tag_len;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,077 | static int __init cipso_v4_init(void)
{
int ret_val;
ret_val = cipso_v4_cache_init();
if (ret_val != 0)
panic("Failed to initialize the CIPSO/IPv4 cache (%d)\n",
ret_val);
return 0;
}
| DoS | 0 | static int __init cipso_v4_init(void)
{
int ret_val;
ret_val = cipso_v4_cache_init();
if (ret_val != 0)
panic("Failed to initialize the CIPSO/IPv4 cache (%d)\n",
ret_val);
return 0;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,078 | static int cipso_v4_map_cat_enum_hton(const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr,
unsigned char *net_cat,
u32 net_cat_len)
{
int cat = -1;
u32 cat_iter = 0;
for (;;) {
cat = netlbl_secattr_catmap_walk(secattr->attr.mls.cat,
cat + 1);
if (cat < 0)
break;
if ((cat_iter + 2) > net_cat_len)
return -ENOSPC;
*((__be16 *)&net_cat[cat_iter]) = htons(cat);
cat_iter += 2;
}
return cat_iter;
}
| DoS | 0 | static int cipso_v4_map_cat_enum_hton(const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr,
unsigned char *net_cat,
u32 net_cat_len)
{
int cat = -1;
u32 cat_iter = 0;
for (;;) {
cat = netlbl_secattr_catmap_walk(secattr->attr.mls.cat,
cat + 1);
if (cat < 0)
break;
if ((cat_iter + 2) > net_cat_len)
return -ENOSPC;
*((__be16 *)&net_cat[cat_iter]) = htons(cat);
cat_iter += 2;
}
return cat_iter;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,079 | static int cipso_v4_map_cat_enum_ntoh(const struct cipso_v4_doi *doi_def,
const unsigned char *net_cat,
u32 net_cat_len,
struct netlbl_lsm_secattr *secattr)
{
int ret_val;
u32 iter;
for (iter = 0; iter < net_cat_len; iter += 2) {
ret_val = netlbl_secattr_catmap_setbit(secattr->attr.mls.cat,
get_unaligned_be16(&net_cat[iter]),
GFP_ATOMIC);
if (ret_val != 0)
return ret_val;
}
return 0;
}
| DoS | 0 | static int cipso_v4_map_cat_enum_ntoh(const struct cipso_v4_doi *doi_def,
const unsigned char *net_cat,
u32 net_cat_len,
struct netlbl_lsm_secattr *secattr)
{
int ret_val;
u32 iter;
for (iter = 0; iter < net_cat_len; iter += 2) {
ret_val = netlbl_secattr_catmap_setbit(secattr->attr.mls.cat,
get_unaligned_be16(&net_cat[iter]),
GFP_ATOMIC);
if (ret_val != 0)
return ret_val;
}
return 0;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,080 | static int cipso_v4_map_cat_enum_valid(const struct cipso_v4_doi *doi_def,
const unsigned char *enumcat,
u32 enumcat_len)
{
u16 cat;
int cat_prev = -1;
u32 iter;
if (doi_def->type != CIPSO_V4_MAP_PASS || enumcat_len & 0x01)
return -EFAULT;
for (iter = 0; iter < enumcat_len; iter += 2) {
cat = get_unaligned_be16(&enumcat[iter]);
if (cat <= cat_prev)
return -EFAULT;
cat_prev = cat;
}
return 0;
}
| DoS | 0 | static int cipso_v4_map_cat_enum_valid(const struct cipso_v4_doi *doi_def,
const unsigned char *enumcat,
u32 enumcat_len)
{
u16 cat;
int cat_prev = -1;
u32 iter;
if (doi_def->type != CIPSO_V4_MAP_PASS || enumcat_len & 0x01)
return -EFAULT;
for (iter = 0; iter < enumcat_len; iter += 2) {
cat = get_unaligned_be16(&enumcat[iter]);
if (cat <= cat_prev)
return -EFAULT;
cat_prev = cat;
}
return 0;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,081 | static int cipso_v4_map_cat_rbm_hton(const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr,
unsigned char *net_cat,
u32 net_cat_len)
{
int host_spot = -1;
u32 net_spot = CIPSO_V4_INV_CAT;
u32 net_spot_max = 0;
u32 net_clen_bits = net_cat_len * 8;
u32 host_cat_size = 0;
u32 *host_cat_array = NULL;
if (doi_def->type == CIPSO_V4_MAP_TRANS) {
host_cat_size = doi_def->map.std->cat.local_size;
host_cat_array = doi_def->map.std->cat.local;
}
for (;;) {
host_spot = netlbl_secattr_catmap_walk(secattr->attr.mls.cat,
host_spot + 1);
if (host_spot < 0)
break;
switch (doi_def->type) {
case CIPSO_V4_MAP_PASS:
net_spot = host_spot;
break;
case CIPSO_V4_MAP_TRANS:
if (host_spot >= host_cat_size)
return -EPERM;
net_spot = host_cat_array[host_spot];
if (net_spot >= CIPSO_V4_INV_CAT)
return -EPERM;
break;
}
if (net_spot >= net_clen_bits)
return -ENOSPC;
cipso_v4_bitmap_setbit(net_cat, net_spot, 1);
if (net_spot > net_spot_max)
net_spot_max = net_spot;
}
if (++net_spot_max % 8)
return net_spot_max / 8 + 1;
return net_spot_max / 8;
}
| DoS | 0 | static int cipso_v4_map_cat_rbm_hton(const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr,
unsigned char *net_cat,
u32 net_cat_len)
{
int host_spot = -1;
u32 net_spot = CIPSO_V4_INV_CAT;
u32 net_spot_max = 0;
u32 net_clen_bits = net_cat_len * 8;
u32 host_cat_size = 0;
u32 *host_cat_array = NULL;
if (doi_def->type == CIPSO_V4_MAP_TRANS) {
host_cat_size = doi_def->map.std->cat.local_size;
host_cat_array = doi_def->map.std->cat.local;
}
for (;;) {
host_spot = netlbl_secattr_catmap_walk(secattr->attr.mls.cat,
host_spot + 1);
if (host_spot < 0)
break;
switch (doi_def->type) {
case CIPSO_V4_MAP_PASS:
net_spot = host_spot;
break;
case CIPSO_V4_MAP_TRANS:
if (host_spot >= host_cat_size)
return -EPERM;
net_spot = host_cat_array[host_spot];
if (net_spot >= CIPSO_V4_INV_CAT)
return -EPERM;
break;
}
if (net_spot >= net_clen_bits)
return -ENOSPC;
cipso_v4_bitmap_setbit(net_cat, net_spot, 1);
if (net_spot > net_spot_max)
net_spot_max = net_spot;
}
if (++net_spot_max % 8)
return net_spot_max / 8 + 1;
return net_spot_max / 8;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,082 | static int cipso_v4_map_cat_rbm_ntoh(const struct cipso_v4_doi *doi_def,
const unsigned char *net_cat,
u32 net_cat_len,
struct netlbl_lsm_secattr *secattr)
{
int ret_val;
int net_spot = -1;
u32 host_spot = CIPSO_V4_INV_CAT;
u32 net_clen_bits = net_cat_len * 8;
u32 net_cat_size = 0;
u32 *net_cat_array = NULL;
if (doi_def->type == CIPSO_V4_MAP_TRANS) {
net_cat_size = doi_def->map.std->cat.cipso_size;
net_cat_array = doi_def->map.std->cat.cipso;
}
for (;;) {
net_spot = cipso_v4_bitmap_walk(net_cat,
net_clen_bits,
net_spot + 1,
1);
if (net_spot < 0) {
if (net_spot == -2)
return -EFAULT;
return 0;
}
switch (doi_def->type) {
case CIPSO_V4_MAP_PASS:
host_spot = net_spot;
break;
case CIPSO_V4_MAP_TRANS:
if (net_spot >= net_cat_size)
return -EPERM;
host_spot = net_cat_array[net_spot];
if (host_spot >= CIPSO_V4_INV_CAT)
return -EPERM;
break;
}
ret_val = netlbl_secattr_catmap_setbit(secattr->attr.mls.cat,
host_spot,
GFP_ATOMIC);
if (ret_val != 0)
return ret_val;
}
return -EINVAL;
}
| DoS | 0 | static int cipso_v4_map_cat_rbm_ntoh(const struct cipso_v4_doi *doi_def,
const unsigned char *net_cat,
u32 net_cat_len,
struct netlbl_lsm_secattr *secattr)
{
int ret_val;
int net_spot = -1;
u32 host_spot = CIPSO_V4_INV_CAT;
u32 net_clen_bits = net_cat_len * 8;
u32 net_cat_size = 0;
u32 *net_cat_array = NULL;
if (doi_def->type == CIPSO_V4_MAP_TRANS) {
net_cat_size = doi_def->map.std->cat.cipso_size;
net_cat_array = doi_def->map.std->cat.cipso;
}
for (;;) {
net_spot = cipso_v4_bitmap_walk(net_cat,
net_clen_bits,
net_spot + 1,
1);
if (net_spot < 0) {
if (net_spot == -2)
return -EFAULT;
return 0;
}
switch (doi_def->type) {
case CIPSO_V4_MAP_PASS:
host_spot = net_spot;
break;
case CIPSO_V4_MAP_TRANS:
if (net_spot >= net_cat_size)
return -EPERM;
host_spot = net_cat_array[net_spot];
if (host_spot >= CIPSO_V4_INV_CAT)
return -EPERM;
break;
}
ret_val = netlbl_secattr_catmap_setbit(secattr->attr.mls.cat,
host_spot,
GFP_ATOMIC);
if (ret_val != 0)
return ret_val;
}
return -EINVAL;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,083 | static int cipso_v4_map_cat_rbm_valid(const struct cipso_v4_doi *doi_def,
const unsigned char *bitmap,
u32 bitmap_len)
{
int cat = -1;
u32 bitmap_len_bits = bitmap_len * 8;
u32 cipso_cat_size;
u32 *cipso_array;
switch (doi_def->type) {
case CIPSO_V4_MAP_PASS:
return 0;
case CIPSO_V4_MAP_TRANS:
cipso_cat_size = doi_def->map.std->cat.cipso_size;
cipso_array = doi_def->map.std->cat.cipso;
for (;;) {
cat = cipso_v4_bitmap_walk(bitmap,
bitmap_len_bits,
cat + 1,
1);
if (cat < 0)
break;
if (cat >= cipso_cat_size ||
cipso_array[cat] >= CIPSO_V4_INV_CAT)
return -EFAULT;
}
if (cat == -1)
return 0;
break;
}
return -EFAULT;
}
| DoS | 0 | static int cipso_v4_map_cat_rbm_valid(const struct cipso_v4_doi *doi_def,
const unsigned char *bitmap,
u32 bitmap_len)
{
int cat = -1;
u32 bitmap_len_bits = bitmap_len * 8;
u32 cipso_cat_size;
u32 *cipso_array;
switch (doi_def->type) {
case CIPSO_V4_MAP_PASS:
return 0;
case CIPSO_V4_MAP_TRANS:
cipso_cat_size = doi_def->map.std->cat.cipso_size;
cipso_array = doi_def->map.std->cat.cipso;
for (;;) {
cat = cipso_v4_bitmap_walk(bitmap,
bitmap_len_bits,
cat + 1,
1);
if (cat < 0)
break;
if (cat >= cipso_cat_size ||
cipso_array[cat] >= CIPSO_V4_INV_CAT)
return -EFAULT;
}
if (cat == -1)
return 0;
break;
}
return -EFAULT;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,084 | static int cipso_v4_map_cat_rng_hton(const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr,
unsigned char *net_cat,
u32 net_cat_len)
{
int iter = -1;
u16 array[CIPSO_V4_TAG_RNG_CAT_MAX * 2];
u32 array_cnt = 0;
u32 cat_size = 0;
/* make sure we don't overflow the 'array[]' variable */
if (net_cat_len >
(CIPSO_V4_OPT_LEN_MAX - CIPSO_V4_HDR_LEN - CIPSO_V4_TAG_RNG_BLEN))
return -ENOSPC;
for (;;) {
iter = netlbl_secattr_catmap_walk(secattr->attr.mls.cat,
iter + 1);
if (iter < 0)
break;
cat_size += (iter == 0 ? 0 : sizeof(u16));
if (cat_size > net_cat_len)
return -ENOSPC;
array[array_cnt++] = iter;
iter = netlbl_secattr_catmap_walk_rng(secattr->attr.mls.cat,
iter);
if (iter < 0)
return -EFAULT;
cat_size += sizeof(u16);
if (cat_size > net_cat_len)
return -ENOSPC;
array[array_cnt++] = iter;
}
for (iter = 0; array_cnt > 0;) {
*((__be16 *)&net_cat[iter]) = htons(array[--array_cnt]);
iter += 2;
array_cnt--;
if (array[array_cnt] != 0) {
*((__be16 *)&net_cat[iter]) = htons(array[array_cnt]);
iter += 2;
}
}
return cat_size;
}
| DoS | 0 | static int cipso_v4_map_cat_rng_hton(const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr,
unsigned char *net_cat,
u32 net_cat_len)
{
int iter = -1;
u16 array[CIPSO_V4_TAG_RNG_CAT_MAX * 2];
u32 array_cnt = 0;
u32 cat_size = 0;
/* make sure we don't overflow the 'array[]' variable */
if (net_cat_len >
(CIPSO_V4_OPT_LEN_MAX - CIPSO_V4_HDR_LEN - CIPSO_V4_TAG_RNG_BLEN))
return -ENOSPC;
for (;;) {
iter = netlbl_secattr_catmap_walk(secattr->attr.mls.cat,
iter + 1);
if (iter < 0)
break;
cat_size += (iter == 0 ? 0 : sizeof(u16));
if (cat_size > net_cat_len)
return -ENOSPC;
array[array_cnt++] = iter;
iter = netlbl_secattr_catmap_walk_rng(secattr->attr.mls.cat,
iter);
if (iter < 0)
return -EFAULT;
cat_size += sizeof(u16);
if (cat_size > net_cat_len)
return -ENOSPC;
array[array_cnt++] = iter;
}
for (iter = 0; array_cnt > 0;) {
*((__be16 *)&net_cat[iter]) = htons(array[--array_cnt]);
iter += 2;
array_cnt--;
if (array[array_cnt] != 0) {
*((__be16 *)&net_cat[iter]) = htons(array[array_cnt]);
iter += 2;
}
}
return cat_size;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,085 | static int cipso_v4_map_cat_rng_ntoh(const struct cipso_v4_doi *doi_def,
const unsigned char *net_cat,
u32 net_cat_len,
struct netlbl_lsm_secattr *secattr)
{
int ret_val;
u32 net_iter;
u16 cat_low;
u16 cat_high;
for (net_iter = 0; net_iter < net_cat_len; net_iter += 4) {
cat_high = get_unaligned_be16(&net_cat[net_iter]);
if ((net_iter + 4) <= net_cat_len)
cat_low = get_unaligned_be16(&net_cat[net_iter + 2]);
else
cat_low = 0;
ret_val = netlbl_secattr_catmap_setrng(secattr->attr.mls.cat,
cat_low,
cat_high,
GFP_ATOMIC);
if (ret_val != 0)
return ret_val;
}
return 0;
}
| DoS | 0 | static int cipso_v4_map_cat_rng_ntoh(const struct cipso_v4_doi *doi_def,
const unsigned char *net_cat,
u32 net_cat_len,
struct netlbl_lsm_secattr *secattr)
{
int ret_val;
u32 net_iter;
u16 cat_low;
u16 cat_high;
for (net_iter = 0; net_iter < net_cat_len; net_iter += 4) {
cat_high = get_unaligned_be16(&net_cat[net_iter]);
if ((net_iter + 4) <= net_cat_len)
cat_low = get_unaligned_be16(&net_cat[net_iter + 2]);
else
cat_low = 0;
ret_val = netlbl_secattr_catmap_setrng(secattr->attr.mls.cat,
cat_low,
cat_high,
GFP_ATOMIC);
if (ret_val != 0)
return ret_val;
}
return 0;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,086 | static int cipso_v4_map_cat_rng_valid(const struct cipso_v4_doi *doi_def,
const unsigned char *rngcat,
u32 rngcat_len)
{
u16 cat_high;
u16 cat_low;
u32 cat_prev = CIPSO_V4_MAX_REM_CATS + 1;
u32 iter;
if (doi_def->type != CIPSO_V4_MAP_PASS || rngcat_len & 0x01)
return -EFAULT;
for (iter = 0; iter < rngcat_len; iter += 4) {
cat_high = get_unaligned_be16(&rngcat[iter]);
if ((iter + 4) <= rngcat_len)
cat_low = get_unaligned_be16(&rngcat[iter + 2]);
else
cat_low = 0;
if (cat_high > cat_prev)
return -EFAULT;
cat_prev = cat_low;
}
return 0;
}
| DoS | 0 | static int cipso_v4_map_cat_rng_valid(const struct cipso_v4_doi *doi_def,
const unsigned char *rngcat,
u32 rngcat_len)
{
u16 cat_high;
u16 cat_low;
u32 cat_prev = CIPSO_V4_MAX_REM_CATS + 1;
u32 iter;
if (doi_def->type != CIPSO_V4_MAP_PASS || rngcat_len & 0x01)
return -EFAULT;
for (iter = 0; iter < rngcat_len; iter += 4) {
cat_high = get_unaligned_be16(&rngcat[iter]);
if ((iter + 4) <= rngcat_len)
cat_low = get_unaligned_be16(&rngcat[iter + 2]);
else
cat_low = 0;
if (cat_high > cat_prev)
return -EFAULT;
cat_prev = cat_low;
}
return 0;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,087 | static int cipso_v4_map_lvl_hton(const struct cipso_v4_doi *doi_def,
u32 host_lvl,
u32 *net_lvl)
{
switch (doi_def->type) {
case CIPSO_V4_MAP_PASS:
*net_lvl = host_lvl;
return 0;
case CIPSO_V4_MAP_TRANS:
if (host_lvl < doi_def->map.std->lvl.local_size &&
doi_def->map.std->lvl.local[host_lvl] < CIPSO_V4_INV_LVL) {
*net_lvl = doi_def->map.std->lvl.local[host_lvl];
return 0;
}
return -EPERM;
}
return -EINVAL;
}
| DoS | 0 | static int cipso_v4_map_lvl_hton(const struct cipso_v4_doi *doi_def,
u32 host_lvl,
u32 *net_lvl)
{
switch (doi_def->type) {
case CIPSO_V4_MAP_PASS:
*net_lvl = host_lvl;
return 0;
case CIPSO_V4_MAP_TRANS:
if (host_lvl < doi_def->map.std->lvl.local_size &&
doi_def->map.std->lvl.local[host_lvl] < CIPSO_V4_INV_LVL) {
*net_lvl = doi_def->map.std->lvl.local[host_lvl];
return 0;
}
return -EPERM;
}
return -EINVAL;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,088 | static int cipso_v4_map_lvl_ntoh(const struct cipso_v4_doi *doi_def,
u32 net_lvl,
u32 *host_lvl)
{
struct cipso_v4_std_map_tbl *map_tbl;
switch (doi_def->type) {
case CIPSO_V4_MAP_PASS:
*host_lvl = net_lvl;
return 0;
case CIPSO_V4_MAP_TRANS:
map_tbl = doi_def->map.std;
if (net_lvl < map_tbl->lvl.cipso_size &&
map_tbl->lvl.cipso[net_lvl] < CIPSO_V4_INV_LVL) {
*host_lvl = doi_def->map.std->lvl.cipso[net_lvl];
return 0;
}
return -EPERM;
}
return -EINVAL;
}
| DoS | 0 | static int cipso_v4_map_lvl_ntoh(const struct cipso_v4_doi *doi_def,
u32 net_lvl,
u32 *host_lvl)
{
struct cipso_v4_std_map_tbl *map_tbl;
switch (doi_def->type) {
case CIPSO_V4_MAP_PASS:
*host_lvl = net_lvl;
return 0;
case CIPSO_V4_MAP_TRANS:
map_tbl = doi_def->map.std;
if (net_lvl < map_tbl->lvl.cipso_size &&
map_tbl->lvl.cipso[net_lvl] < CIPSO_V4_INV_LVL) {
*host_lvl = doi_def->map.std->lvl.cipso[net_lvl];
return 0;
}
return -EPERM;
}
return -EINVAL;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,089 | static int cipso_v4_parsetag_enum(const struct cipso_v4_doi *doi_def,
const unsigned char *tag,
struct netlbl_lsm_secattr *secattr)
{
int ret_val;
u8 tag_len = tag[1];
u32 level;
ret_val = cipso_v4_map_lvl_ntoh(doi_def, tag[3], &level);
if (ret_val != 0)
return ret_val;
secattr->attr.mls.lvl = level;
secattr->flags |= NETLBL_SECATTR_MLS_LVL;
if (tag_len > 4) {
secattr->attr.mls.cat =
netlbl_secattr_catmap_alloc(GFP_ATOMIC);
if (secattr->attr.mls.cat == NULL)
return -ENOMEM;
ret_val = cipso_v4_map_cat_enum_ntoh(doi_def,
&tag[4],
tag_len - 4,
secattr);
if (ret_val != 0) {
netlbl_secattr_catmap_free(secattr->attr.mls.cat);
return ret_val;
}
secattr->flags |= NETLBL_SECATTR_MLS_CAT;
}
return 0;
}
| DoS | 0 | static int cipso_v4_parsetag_enum(const struct cipso_v4_doi *doi_def,
const unsigned char *tag,
struct netlbl_lsm_secattr *secattr)
{
int ret_val;
u8 tag_len = tag[1];
u32 level;
ret_val = cipso_v4_map_lvl_ntoh(doi_def, tag[3], &level);
if (ret_val != 0)
return ret_val;
secattr->attr.mls.lvl = level;
secattr->flags |= NETLBL_SECATTR_MLS_LVL;
if (tag_len > 4) {
secattr->attr.mls.cat =
netlbl_secattr_catmap_alloc(GFP_ATOMIC);
if (secattr->attr.mls.cat == NULL)
return -ENOMEM;
ret_val = cipso_v4_map_cat_enum_ntoh(doi_def,
&tag[4],
tag_len - 4,
secattr);
if (ret_val != 0) {
netlbl_secattr_catmap_free(secattr->attr.mls.cat);
return ret_val;
}
secattr->flags |= NETLBL_SECATTR_MLS_CAT;
}
return 0;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,090 | static int cipso_v4_parsetag_loc(const struct cipso_v4_doi *doi_def,
const unsigned char *tag,
struct netlbl_lsm_secattr *secattr)
{
secattr->attr.secid = *(u32 *)&tag[2];
secattr->flags |= NETLBL_SECATTR_SECID;
return 0;
}
| DoS | 0 | static int cipso_v4_parsetag_loc(const struct cipso_v4_doi *doi_def,
const unsigned char *tag,
struct netlbl_lsm_secattr *secattr)
{
secattr->attr.secid = *(u32 *)&tag[2];
secattr->flags |= NETLBL_SECATTR_SECID;
return 0;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,091 | static int cipso_v4_parsetag_rbm(const struct cipso_v4_doi *doi_def,
const unsigned char *tag,
struct netlbl_lsm_secattr *secattr)
{
int ret_val;
u8 tag_len = tag[1];
u32 level;
ret_val = cipso_v4_map_lvl_ntoh(doi_def, tag[3], &level);
if (ret_val != 0)
return ret_val;
secattr->attr.mls.lvl = level;
secattr->flags |= NETLBL_SECATTR_MLS_LVL;
if (tag_len > 4) {
secattr->attr.mls.cat =
netlbl_secattr_catmap_alloc(GFP_ATOMIC);
if (secattr->attr.mls.cat == NULL)
return -ENOMEM;
ret_val = cipso_v4_map_cat_rbm_ntoh(doi_def,
&tag[4],
tag_len - 4,
secattr);
if (ret_val != 0) {
netlbl_secattr_catmap_free(secattr->attr.mls.cat);
return ret_val;
}
secattr->flags |= NETLBL_SECATTR_MLS_CAT;
}
return 0;
}
| DoS | 0 | static int cipso_v4_parsetag_rbm(const struct cipso_v4_doi *doi_def,
const unsigned char *tag,
struct netlbl_lsm_secattr *secattr)
{
int ret_val;
u8 tag_len = tag[1];
u32 level;
ret_val = cipso_v4_map_lvl_ntoh(doi_def, tag[3], &level);
if (ret_val != 0)
return ret_val;
secattr->attr.mls.lvl = level;
secattr->flags |= NETLBL_SECATTR_MLS_LVL;
if (tag_len > 4) {
secattr->attr.mls.cat =
netlbl_secattr_catmap_alloc(GFP_ATOMIC);
if (secattr->attr.mls.cat == NULL)
return -ENOMEM;
ret_val = cipso_v4_map_cat_rbm_ntoh(doi_def,
&tag[4],
tag_len - 4,
secattr);
if (ret_val != 0) {
netlbl_secattr_catmap_free(secattr->attr.mls.cat);
return ret_val;
}
secattr->flags |= NETLBL_SECATTR_MLS_CAT;
}
return 0;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,092 | static int cipso_v4_parsetag_rng(const struct cipso_v4_doi *doi_def,
const unsigned char *tag,
struct netlbl_lsm_secattr *secattr)
{
int ret_val;
u8 tag_len = tag[1];
u32 level;
ret_val = cipso_v4_map_lvl_ntoh(doi_def, tag[3], &level);
if (ret_val != 0)
return ret_val;
secattr->attr.mls.lvl = level;
secattr->flags |= NETLBL_SECATTR_MLS_LVL;
if (tag_len > 4) {
secattr->attr.mls.cat =
netlbl_secattr_catmap_alloc(GFP_ATOMIC);
if (secattr->attr.mls.cat == NULL)
return -ENOMEM;
ret_val = cipso_v4_map_cat_rng_ntoh(doi_def,
&tag[4],
tag_len - 4,
secattr);
if (ret_val != 0) {
netlbl_secattr_catmap_free(secattr->attr.mls.cat);
return ret_val;
}
secattr->flags |= NETLBL_SECATTR_MLS_CAT;
}
return 0;
}
| DoS | 0 | static int cipso_v4_parsetag_rng(const struct cipso_v4_doi *doi_def,
const unsigned char *tag,
struct netlbl_lsm_secattr *secattr)
{
int ret_val;
u8 tag_len = tag[1];
u32 level;
ret_val = cipso_v4_map_lvl_ntoh(doi_def, tag[3], &level);
if (ret_val != 0)
return ret_val;
secattr->attr.mls.lvl = level;
secattr->flags |= NETLBL_SECATTR_MLS_LVL;
if (tag_len > 4) {
secattr->attr.mls.cat =
netlbl_secattr_catmap_alloc(GFP_ATOMIC);
if (secattr->attr.mls.cat == NULL)
return -ENOMEM;
ret_val = cipso_v4_map_cat_rng_ntoh(doi_def,
&tag[4],
tag_len - 4,
secattr);
if (ret_val != 0) {
netlbl_secattr_catmap_free(secattr->attr.mls.cat);
return ret_val;
}
secattr->flags |= NETLBL_SECATTR_MLS_CAT;
}
return 0;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,093 | int cipso_v4_skbuff_getattr(const struct sk_buff *skb,
struct netlbl_lsm_secattr *secattr)
{
return cipso_v4_getattr(CIPSO_V4_OPTPTR(skb), secattr);
}
| DoS | 0 | int cipso_v4_skbuff_getattr(const struct sk_buff *skb,
struct netlbl_lsm_secattr *secattr)
{
return cipso_v4_getattr(CIPSO_V4_OPTPTR(skb), secattr);
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,094 | int cipso_v4_skbuff_setattr(struct sk_buff *skb,
const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr)
{
int ret_val;
struct iphdr *iph;
struct ip_options *opt = &IPCB(skb)->opt;
unsigned char buf[CIPSO_V4_OPT_LEN_MAX];
u32 buf_len = CIPSO_V4_OPT_LEN_MAX;
u32 opt_len;
int len_delta;
ret_val = cipso_v4_genopt(buf, buf_len, doi_def, secattr);
if (ret_val < 0)
return ret_val;
buf_len = ret_val;
opt_len = (buf_len + 3) & ~3;
/* we overwrite any existing options to ensure that we have enough
* room for the CIPSO option, the reason is that we _need_ to guarantee
* that the security label is applied to the packet - we do the same
* thing when using the socket options and it hasn't caused a problem,
* if we need to we can always revisit this choice later */
len_delta = opt_len - opt->optlen;
/* if we don't ensure enough headroom we could panic on the skb_push()
* call below so make sure we have enough, we are also "mangling" the
* packet so we should probably do a copy-on-write call anyway */
ret_val = skb_cow(skb, skb_headroom(skb) + len_delta);
if (ret_val < 0)
return ret_val;
if (len_delta > 0) {
/* we assume that the header + opt->optlen have already been
* "pushed" in ip_options_build() or similar */
iph = ip_hdr(skb);
skb_push(skb, len_delta);
memmove((char *)iph - len_delta, iph, iph->ihl << 2);
skb_reset_network_header(skb);
iph = ip_hdr(skb);
} else if (len_delta < 0) {
iph = ip_hdr(skb);
memset(iph + 1, IPOPT_NOP, opt->optlen);
} else
iph = ip_hdr(skb);
if (opt->optlen > 0)
memset(opt, 0, sizeof(*opt));
opt->optlen = opt_len;
opt->cipso = sizeof(struct iphdr);
opt->is_changed = 1;
/* we have to do the following because we are being called from a
* netfilter hook which means the packet already has had the header
* fields populated and the checksum calculated - yes this means we
* are doing more work than needed but we do it to keep the core
* stack clean and tidy */
memcpy(iph + 1, buf, buf_len);
if (opt_len > buf_len)
memset((char *)(iph + 1) + buf_len, 0, opt_len - buf_len);
if (len_delta != 0) {
iph->ihl = 5 + (opt_len >> 2);
iph->tot_len = htons(skb->len);
}
ip_send_check(iph);
return 0;
}
| DoS | 0 | int cipso_v4_skbuff_setattr(struct sk_buff *skb,
const struct cipso_v4_doi *doi_def,
const struct netlbl_lsm_secattr *secattr)
{
int ret_val;
struct iphdr *iph;
struct ip_options *opt = &IPCB(skb)->opt;
unsigned char buf[CIPSO_V4_OPT_LEN_MAX];
u32 buf_len = CIPSO_V4_OPT_LEN_MAX;
u32 opt_len;
int len_delta;
ret_val = cipso_v4_genopt(buf, buf_len, doi_def, secattr);
if (ret_val < 0)
return ret_val;
buf_len = ret_val;
opt_len = (buf_len + 3) & ~3;
/* we overwrite any existing options to ensure that we have enough
* room for the CIPSO option, the reason is that we _need_ to guarantee
* that the security label is applied to the packet - we do the same
* thing when using the socket options and it hasn't caused a problem,
* if we need to we can always revisit this choice later */
len_delta = opt_len - opt->optlen;
/* if we don't ensure enough headroom we could panic on the skb_push()
* call below so make sure we have enough, we are also "mangling" the
* packet so we should probably do a copy-on-write call anyway */
ret_val = skb_cow(skb, skb_headroom(skb) + len_delta);
if (ret_val < 0)
return ret_val;
if (len_delta > 0) {
/* we assume that the header + opt->optlen have already been
* "pushed" in ip_options_build() or similar */
iph = ip_hdr(skb);
skb_push(skb, len_delta);
memmove((char *)iph - len_delta, iph, iph->ihl << 2);
skb_reset_network_header(skb);
iph = ip_hdr(skb);
} else if (len_delta < 0) {
iph = ip_hdr(skb);
memset(iph + 1, IPOPT_NOP, opt->optlen);
} else
iph = ip_hdr(skb);
if (opt->optlen > 0)
memset(opt, 0, sizeof(*opt));
opt->optlen = opt_len;
opt->cipso = sizeof(struct iphdr);
opt->is_changed = 1;
/* we have to do the following because we are being called from a
* netfilter hook which means the packet already has had the header
* fields populated and the checksum calculated - yes this means we
* are doing more work than needed but we do it to keep the core
* stack clean and tidy */
memcpy(iph + 1, buf, buf_len);
if (opt_len > buf_len)
memset((char *)(iph + 1) + buf_len, 0, opt_len - buf_len);
if (len_delta != 0) {
iph->ihl = 5 + (opt_len >> 2);
iph->tot_len = htons(skb->len);
}
ip_send_check(iph);
return 0;
}
| @@ -1857,6 +1857,11 @@ static int cipso_v4_genopt(unsigned char *buf, u32 buf_len,
return CIPSO_V4_HDR_LEN + ret_val;
}
+static void opt_kfree_rcu(struct rcu_head *head)
+{
+ kfree(container_of(head, struct ip_options_rcu, rcu));
+}
+
/**
* cipso_v4_sock_setattr - Add a CIPSO option to a socket
* @sk: the socket
@@ -1879,7 +1884,7 @@ int cipso_v4_sock_setattr(struct sock *sk,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *old, *opt = NULL;
struct inet_sock *sk_inet;
struct inet_connection_sock *sk_conn;
@@ -1915,22 +1920,25 @@ int cipso_v4_sock_setattr(struct sock *sk,
ret_val = -ENOMEM;
goto socket_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
sk_inet = inet_sk(sk);
+
+ old = rcu_dereference_protected(sk_inet->inet_opt, sock_owned_by_user(sk));
if (sk_inet->is_icsk) {
sk_conn = inet_csk(sk);
- if (sk_inet->opt)
- sk_conn->icsk_ext_hdr_len -= sk_inet->opt->optlen;
- sk_conn->icsk_ext_hdr_len += opt->optlen;
+ if (old)
+ sk_conn->icsk_ext_hdr_len -= old->opt.optlen;
+ sk_conn->icsk_ext_hdr_len += opt->opt.optlen;
sk_conn->icsk_sync_mss(sk, sk_conn->icsk_pmtu_cookie);
}
- opt = xchg(&sk_inet->opt, opt);
- kfree(opt);
+ rcu_assign_pointer(sk_inet->inet_opt, opt);
+ if (old)
+ call_rcu(&old->rcu, opt_kfree_rcu);
return 0;
@@ -1960,7 +1968,7 @@ int cipso_v4_req_setattr(struct request_sock *req,
unsigned char *buf = NULL;
u32 buf_len;
u32 opt_len;
- struct ip_options *opt = NULL;
+ struct ip_options_rcu *opt = NULL;
struct inet_request_sock *req_inet;
/* We allocate the maximum CIPSO option size here so we are probably
@@ -1988,15 +1996,16 @@ int cipso_v4_req_setattr(struct request_sock *req,
ret_val = -ENOMEM;
goto req_setattr_failure;
}
- memcpy(opt->__data, buf, buf_len);
- opt->optlen = opt_len;
- opt->cipso = sizeof(struct iphdr);
+ memcpy(opt->opt.__data, buf, buf_len);
+ opt->opt.optlen = opt_len;
+ opt->opt.cipso = sizeof(struct iphdr);
kfree(buf);
buf = NULL;
req_inet = inet_rsk(req);
opt = xchg(&req_inet->opt, opt);
- kfree(opt);
+ if (opt)
+ call_rcu(&opt->rcu, opt_kfree_rcu);
return 0;
@@ -2016,34 +2025,34 @@ int cipso_v4_req_setattr(struct request_sock *req,
* values on failure.
*
*/
-static int cipso_v4_delopt(struct ip_options **opt_ptr)
+static int cipso_v4_delopt(struct ip_options_rcu **opt_ptr)
{
int hdr_delta = 0;
- struct ip_options *opt = *opt_ptr;
+ struct ip_options_rcu *opt = *opt_ptr;
- if (opt->srr || opt->rr || opt->ts || opt->router_alert) {
+ if (opt->opt.srr || opt->opt.rr || opt->opt.ts || opt->opt.router_alert) {
u8 cipso_len;
u8 cipso_off;
unsigned char *cipso_ptr;
int iter;
int optlen_new;
- cipso_off = opt->cipso - sizeof(struct iphdr);
- cipso_ptr = &opt->__data[cipso_off];
+ cipso_off = opt->opt.cipso - sizeof(struct iphdr);
+ cipso_ptr = &opt->opt.__data[cipso_off];
cipso_len = cipso_ptr[1];
- if (opt->srr > opt->cipso)
- opt->srr -= cipso_len;
- if (opt->rr > opt->cipso)
- opt->rr -= cipso_len;
- if (opt->ts > opt->cipso)
- opt->ts -= cipso_len;
- if (opt->router_alert > opt->cipso)
- opt->router_alert -= cipso_len;
- opt->cipso = 0;
+ if (opt->opt.srr > opt->opt.cipso)
+ opt->opt.srr -= cipso_len;
+ if (opt->opt.rr > opt->opt.cipso)
+ opt->opt.rr -= cipso_len;
+ if (opt->opt.ts > opt->opt.cipso)
+ opt->opt.ts -= cipso_len;
+ if (opt->opt.router_alert > opt->opt.cipso)
+ opt->opt.router_alert -= cipso_len;
+ opt->opt.cipso = 0;
memmove(cipso_ptr, cipso_ptr + cipso_len,
- opt->optlen - cipso_off - cipso_len);
+ opt->opt.optlen - cipso_off - cipso_len);
/* determining the new total option length is tricky because of
* the padding necessary, the only thing i can think to do at
@@ -2052,21 +2061,21 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
* from there we can determine the new total option length */
iter = 0;
optlen_new = 0;
- while (iter < opt->optlen)
- if (opt->__data[iter] != IPOPT_NOP) {
- iter += opt->__data[iter + 1];
+ while (iter < opt->opt.optlen)
+ if (opt->opt.__data[iter] != IPOPT_NOP) {
+ iter += opt->opt.__data[iter + 1];
optlen_new = iter;
} else
iter++;
- hdr_delta = opt->optlen;
- opt->optlen = (optlen_new + 3) & ~3;
- hdr_delta -= opt->optlen;
+ hdr_delta = opt->opt.optlen;
+ opt->opt.optlen = (optlen_new + 3) & ~3;
+ hdr_delta -= opt->opt.optlen;
} else {
/* only the cipso option was present on the socket so we can
* remove the entire option struct */
*opt_ptr = NULL;
- hdr_delta = opt->optlen;
- kfree(opt);
+ hdr_delta = opt->opt.optlen;
+ call_rcu(&opt->rcu, opt_kfree_rcu);
}
return hdr_delta;
@@ -2083,15 +2092,15 @@ static int cipso_v4_delopt(struct ip_options **opt_ptr)
void cipso_v4_sock_delattr(struct sock *sk)
{
int hdr_delta;
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_sock *sk_inet;
sk_inet = inet_sk(sk);
- opt = sk_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ opt = rcu_dereference_protected(sk_inet->inet_opt, 1);
+ if (opt == NULL || opt->opt.cipso == 0)
return;
- hdr_delta = cipso_v4_delopt(&sk_inet->opt);
+ hdr_delta = cipso_v4_delopt(&sk_inet->inet_opt);
if (sk_inet->is_icsk && hdr_delta > 0) {
struct inet_connection_sock *sk_conn = inet_csk(sk);
sk_conn->icsk_ext_hdr_len -= hdr_delta;
@@ -2109,12 +2118,12 @@ void cipso_v4_sock_delattr(struct sock *sk)
*/
void cipso_v4_req_delattr(struct request_sock *req)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
struct inet_request_sock *req_inet;
req_inet = inet_rsk(req);
opt = req_inet->opt;
- if (opt == NULL || opt->cipso == 0)
+ if (opt == NULL || opt->opt.cipso == 0)
return;
cipso_v4_delopt(&req_inet->opt);
@@ -2184,14 +2193,18 @@ static int cipso_v4_getattr(const unsigned char *cipso,
*/
int cipso_v4_sock_getattr(struct sock *sk, struct netlbl_lsm_secattr *secattr)
{
- struct ip_options *opt;
+ struct ip_options_rcu *opt;
+ int res = -ENOMSG;
- opt = inet_sk(sk)->opt;
- if (opt == NULL || opt->cipso == 0)
- return -ENOMSG;
-
- return cipso_v4_getattr(opt->__data + opt->cipso - sizeof(struct iphdr),
- secattr);
+ rcu_read_lock();
+ opt = rcu_dereference(inet_sk(sk)->inet_opt);
+ if (opt && opt->opt.cipso)
+ res = cipso_v4_getattr(opt->opt.__data +
+ opt->opt.cipso -
+ sizeof(struct iphdr),
+ secattr);
+ rcu_read_unlock();
+ return res;
}
/** | CWE-362 | null | null |
15,095 | static void icmp_address(struct sk_buff *skb)
{
#if 0
if (net_ratelimit())
printk(KERN_DEBUG "a guy asks for address mask. Who is it?\n");
#endif
}
| DoS | 0 | static void icmp_address(struct sk_buff *skb)
{
#if 0
if (net_ratelimit())
printk(KERN_DEBUG "a guy asks for address mask. Who is it?\n");
#endif
}
| @@ -108,8 +108,7 @@ struct icmp_bxm {
__be32 times[3];
} data;
int head_len;
- struct ip_options replyopts;
- unsigned char optbuf[40];
+ struct ip_options_data replyopts;
};
/* An array of errno for error messages from dest unreach. */
@@ -333,7 +332,7 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb)
struct inet_sock *inet;
__be32 daddr;
- if (ip_options_echo(&icmp_param->replyopts, skb))
+ if (ip_options_echo(&icmp_param->replyopts.opt.opt, skb))
return;
sk = icmp_xmit_lock(net);
@@ -347,10 +346,10 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb)
daddr = ipc.addr = rt->rt_src;
ipc.opt = NULL;
ipc.tx_flags = 0;
- if (icmp_param->replyopts.optlen) {
- ipc.opt = &icmp_param->replyopts;
- if (ipc.opt->srr)
- daddr = icmp_param->replyopts.faddr;
+ if (icmp_param->replyopts.opt.opt.optlen) {
+ ipc.opt = &icmp_param->replyopts.opt;
+ if (ipc.opt->opt.srr)
+ daddr = icmp_param->replyopts.opt.opt.faddr;
}
{
struct flowi4 fl4 = {
@@ -379,8 +378,8 @@ static struct rtable *icmp_route_lookup(struct net *net, struct sk_buff *skb_in,
struct icmp_bxm *param)
{
struct flowi4 fl4 = {
- .daddr = (param->replyopts.srr ?
- param->replyopts.faddr : iph->saddr),
+ .daddr = (param->replyopts.opt.opt.srr ?
+ param->replyopts.opt.opt.faddr : iph->saddr),
.saddr = saddr,
.flowi4_tos = RT_TOS(tos),
.flowi4_proto = IPPROTO_ICMP,
@@ -581,7 +580,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
IPTOS_PREC_INTERNETCONTROL) :
iph->tos;
- if (ip_options_echo(&icmp_param.replyopts, skb_in))
+ if (ip_options_echo(&icmp_param.replyopts.opt.opt, skb_in))
goto out_unlock;
@@ -597,7 +596,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
icmp_param.offset = skb_network_offset(skb_in);
inet_sk(sk)->tos = tos;
ipc.addr = iph->saddr;
- ipc.opt = &icmp_param.replyopts;
+ ipc.opt = &icmp_param.replyopts.opt;
ipc.tx_flags = 0;
rt = icmp_route_lookup(net, skb_in, iph, saddr, tos,
@@ -613,7 +612,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
room = dst_mtu(&rt->dst);
if (room > 576)
room = 576;
- room -= sizeof(struct iphdr) + icmp_param.replyopts.optlen;
+ room -= sizeof(struct iphdr) + icmp_param.replyopts.opt.opt.optlen;
room -= sizeof(struct icmphdr);
icmp_param.data_len = skb_in->len - icmp_param.offset; | CWE-362 | null | null |
15,096 | static void icmp_address_reply(struct sk_buff *skb)
{
struct rtable *rt = skb_rtable(skb);
struct net_device *dev = skb->dev;
struct in_device *in_dev;
struct in_ifaddr *ifa;
if (skb->len < 4 || !(rt->rt_flags&RTCF_DIRECTSRC))
return;
in_dev = __in_dev_get_rcu(dev);
if (!in_dev)
return;
if (in_dev->ifa_list &&
IN_DEV_LOG_MARTIANS(in_dev) &&
IN_DEV_FORWARD(in_dev)) {
__be32 _mask, *mp;
mp = skb_header_pointer(skb, 0, sizeof(_mask), &_mask);
BUG_ON(mp == NULL);
for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
if (*mp == ifa->ifa_mask &&
inet_ifa_match(rt->rt_src, ifa))
break;
}
if (!ifa && net_ratelimit()) {
printk(KERN_INFO "Wrong address mask %pI4 from %s/%pI4\n",
mp, dev->name, &rt->rt_src);
}
}
}
| DoS | 0 | static void icmp_address_reply(struct sk_buff *skb)
{
struct rtable *rt = skb_rtable(skb);
struct net_device *dev = skb->dev;
struct in_device *in_dev;
struct in_ifaddr *ifa;
if (skb->len < 4 || !(rt->rt_flags&RTCF_DIRECTSRC))
return;
in_dev = __in_dev_get_rcu(dev);
if (!in_dev)
return;
if (in_dev->ifa_list &&
IN_DEV_LOG_MARTIANS(in_dev) &&
IN_DEV_FORWARD(in_dev)) {
__be32 _mask, *mp;
mp = skb_header_pointer(skb, 0, sizeof(_mask), &_mask);
BUG_ON(mp == NULL);
for (ifa = in_dev->ifa_list; ifa; ifa = ifa->ifa_next) {
if (*mp == ifa->ifa_mask &&
inet_ifa_match(rt->rt_src, ifa))
break;
}
if (!ifa && net_ratelimit()) {
printk(KERN_INFO "Wrong address mask %pI4 from %s/%pI4\n",
mp, dev->name, &rt->rt_src);
}
}
}
| @@ -108,8 +108,7 @@ struct icmp_bxm {
__be32 times[3];
} data;
int head_len;
- struct ip_options replyopts;
- unsigned char optbuf[40];
+ struct ip_options_data replyopts;
};
/* An array of errno for error messages from dest unreach. */
@@ -333,7 +332,7 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb)
struct inet_sock *inet;
__be32 daddr;
- if (ip_options_echo(&icmp_param->replyopts, skb))
+ if (ip_options_echo(&icmp_param->replyopts.opt.opt, skb))
return;
sk = icmp_xmit_lock(net);
@@ -347,10 +346,10 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb)
daddr = ipc.addr = rt->rt_src;
ipc.opt = NULL;
ipc.tx_flags = 0;
- if (icmp_param->replyopts.optlen) {
- ipc.opt = &icmp_param->replyopts;
- if (ipc.opt->srr)
- daddr = icmp_param->replyopts.faddr;
+ if (icmp_param->replyopts.opt.opt.optlen) {
+ ipc.opt = &icmp_param->replyopts.opt;
+ if (ipc.opt->opt.srr)
+ daddr = icmp_param->replyopts.opt.opt.faddr;
}
{
struct flowi4 fl4 = {
@@ -379,8 +378,8 @@ static struct rtable *icmp_route_lookup(struct net *net, struct sk_buff *skb_in,
struct icmp_bxm *param)
{
struct flowi4 fl4 = {
- .daddr = (param->replyopts.srr ?
- param->replyopts.faddr : iph->saddr),
+ .daddr = (param->replyopts.opt.opt.srr ?
+ param->replyopts.opt.opt.faddr : iph->saddr),
.saddr = saddr,
.flowi4_tos = RT_TOS(tos),
.flowi4_proto = IPPROTO_ICMP,
@@ -581,7 +580,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
IPTOS_PREC_INTERNETCONTROL) :
iph->tos;
- if (ip_options_echo(&icmp_param.replyopts, skb_in))
+ if (ip_options_echo(&icmp_param.replyopts.opt.opt, skb_in))
goto out_unlock;
@@ -597,7 +596,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
icmp_param.offset = skb_network_offset(skb_in);
inet_sk(sk)->tos = tos;
ipc.addr = iph->saddr;
- ipc.opt = &icmp_param.replyopts;
+ ipc.opt = &icmp_param.replyopts.opt;
ipc.tx_flags = 0;
rt = icmp_route_lookup(net, skb_in, iph, saddr, tos,
@@ -613,7 +612,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
room = dst_mtu(&rt->dst);
if (room > 576)
room = 576;
- room -= sizeof(struct iphdr) + icmp_param.replyopts.optlen;
+ room -= sizeof(struct iphdr) + icmp_param.replyopts.opt.opt.optlen;
room -= sizeof(struct icmphdr);
icmp_param.data_len = skb_in->len - icmp_param.offset; | CWE-362 | null | null |
15,097 | static void icmp_discard(struct sk_buff *skb)
{
}
| DoS | 0 | static void icmp_discard(struct sk_buff *skb)
{
}
| @@ -108,8 +108,7 @@ struct icmp_bxm {
__be32 times[3];
} data;
int head_len;
- struct ip_options replyopts;
- unsigned char optbuf[40];
+ struct ip_options_data replyopts;
};
/* An array of errno for error messages from dest unreach. */
@@ -333,7 +332,7 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb)
struct inet_sock *inet;
__be32 daddr;
- if (ip_options_echo(&icmp_param->replyopts, skb))
+ if (ip_options_echo(&icmp_param->replyopts.opt.opt, skb))
return;
sk = icmp_xmit_lock(net);
@@ -347,10 +346,10 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb)
daddr = ipc.addr = rt->rt_src;
ipc.opt = NULL;
ipc.tx_flags = 0;
- if (icmp_param->replyopts.optlen) {
- ipc.opt = &icmp_param->replyopts;
- if (ipc.opt->srr)
- daddr = icmp_param->replyopts.faddr;
+ if (icmp_param->replyopts.opt.opt.optlen) {
+ ipc.opt = &icmp_param->replyopts.opt;
+ if (ipc.opt->opt.srr)
+ daddr = icmp_param->replyopts.opt.opt.faddr;
}
{
struct flowi4 fl4 = {
@@ -379,8 +378,8 @@ static struct rtable *icmp_route_lookup(struct net *net, struct sk_buff *skb_in,
struct icmp_bxm *param)
{
struct flowi4 fl4 = {
- .daddr = (param->replyopts.srr ?
- param->replyopts.faddr : iph->saddr),
+ .daddr = (param->replyopts.opt.opt.srr ?
+ param->replyopts.opt.opt.faddr : iph->saddr),
.saddr = saddr,
.flowi4_tos = RT_TOS(tos),
.flowi4_proto = IPPROTO_ICMP,
@@ -581,7 +580,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
IPTOS_PREC_INTERNETCONTROL) :
iph->tos;
- if (ip_options_echo(&icmp_param.replyopts, skb_in))
+ if (ip_options_echo(&icmp_param.replyopts.opt.opt, skb_in))
goto out_unlock;
@@ -597,7 +596,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
icmp_param.offset = skb_network_offset(skb_in);
inet_sk(sk)->tos = tos;
ipc.addr = iph->saddr;
- ipc.opt = &icmp_param.replyopts;
+ ipc.opt = &icmp_param.replyopts.opt;
ipc.tx_flags = 0;
rt = icmp_route_lookup(net, skb_in, iph, saddr, tos,
@@ -613,7 +612,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
room = dst_mtu(&rt->dst);
if (room > 576)
room = 576;
- room -= sizeof(struct iphdr) + icmp_param.replyopts.optlen;
+ room -= sizeof(struct iphdr) + icmp_param.replyopts.opt.opt.optlen;
room -= sizeof(struct icmphdr);
icmp_param.data_len = skb_in->len - icmp_param.offset; | CWE-362 | null | null |
15,098 | static void icmp_echo(struct sk_buff *skb)
{
struct net *net;
net = dev_net(skb_dst(skb)->dev);
if (!net->ipv4.sysctl_icmp_echo_ignore_all) {
struct icmp_bxm icmp_param;
icmp_param.data.icmph = *icmp_hdr(skb);
icmp_param.data.icmph.type = ICMP_ECHOREPLY;
icmp_param.skb = skb;
icmp_param.offset = 0;
icmp_param.data_len = skb->len;
icmp_param.head_len = sizeof(struct icmphdr);
icmp_reply(&icmp_param, skb);
}
}
| DoS | 0 | static void icmp_echo(struct sk_buff *skb)
{
struct net *net;
net = dev_net(skb_dst(skb)->dev);
if (!net->ipv4.sysctl_icmp_echo_ignore_all) {
struct icmp_bxm icmp_param;
icmp_param.data.icmph = *icmp_hdr(skb);
icmp_param.data.icmph.type = ICMP_ECHOREPLY;
icmp_param.skb = skb;
icmp_param.offset = 0;
icmp_param.data_len = skb->len;
icmp_param.head_len = sizeof(struct icmphdr);
icmp_reply(&icmp_param, skb);
}
}
| @@ -108,8 +108,7 @@ struct icmp_bxm {
__be32 times[3];
} data;
int head_len;
- struct ip_options replyopts;
- unsigned char optbuf[40];
+ struct ip_options_data replyopts;
};
/* An array of errno for error messages from dest unreach. */
@@ -333,7 +332,7 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb)
struct inet_sock *inet;
__be32 daddr;
- if (ip_options_echo(&icmp_param->replyopts, skb))
+ if (ip_options_echo(&icmp_param->replyopts.opt.opt, skb))
return;
sk = icmp_xmit_lock(net);
@@ -347,10 +346,10 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb)
daddr = ipc.addr = rt->rt_src;
ipc.opt = NULL;
ipc.tx_flags = 0;
- if (icmp_param->replyopts.optlen) {
- ipc.opt = &icmp_param->replyopts;
- if (ipc.opt->srr)
- daddr = icmp_param->replyopts.faddr;
+ if (icmp_param->replyopts.opt.opt.optlen) {
+ ipc.opt = &icmp_param->replyopts.opt;
+ if (ipc.opt->opt.srr)
+ daddr = icmp_param->replyopts.opt.opt.faddr;
}
{
struct flowi4 fl4 = {
@@ -379,8 +378,8 @@ static struct rtable *icmp_route_lookup(struct net *net, struct sk_buff *skb_in,
struct icmp_bxm *param)
{
struct flowi4 fl4 = {
- .daddr = (param->replyopts.srr ?
- param->replyopts.faddr : iph->saddr),
+ .daddr = (param->replyopts.opt.opt.srr ?
+ param->replyopts.opt.opt.faddr : iph->saddr),
.saddr = saddr,
.flowi4_tos = RT_TOS(tos),
.flowi4_proto = IPPROTO_ICMP,
@@ -581,7 +580,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
IPTOS_PREC_INTERNETCONTROL) :
iph->tos;
- if (ip_options_echo(&icmp_param.replyopts, skb_in))
+ if (ip_options_echo(&icmp_param.replyopts.opt.opt, skb_in))
goto out_unlock;
@@ -597,7 +596,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
icmp_param.offset = skb_network_offset(skb_in);
inet_sk(sk)->tos = tos;
ipc.addr = iph->saddr;
- ipc.opt = &icmp_param.replyopts;
+ ipc.opt = &icmp_param.replyopts.opt;
ipc.tx_flags = 0;
rt = icmp_route_lookup(net, skb_in, iph, saddr, tos,
@@ -613,7 +612,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
room = dst_mtu(&rt->dst);
if (room > 576)
room = 576;
- room -= sizeof(struct iphdr) + icmp_param.replyopts.optlen;
+ room -= sizeof(struct iphdr) + icmp_param.replyopts.opt.opt.optlen;
room -= sizeof(struct icmphdr);
icmp_param.data_len = skb_in->len - icmp_param.offset; | CWE-362 | null | null |
15,099 | static int icmp_glue_bits(void *from, char *to, int offset, int len, int odd,
struct sk_buff *skb)
{
struct icmp_bxm *icmp_param = (struct icmp_bxm *)from;
__wsum csum;
csum = skb_copy_and_csum_bits(icmp_param->skb,
icmp_param->offset + offset,
to, len, 0);
skb->csum = csum_block_add(skb->csum, csum, odd);
if (icmp_pointers[icmp_param->data.icmph.type].error)
nf_ct_attach(skb, icmp_param->skb);
return 0;
}
| DoS | 0 | static int icmp_glue_bits(void *from, char *to, int offset, int len, int odd,
struct sk_buff *skb)
{
struct icmp_bxm *icmp_param = (struct icmp_bxm *)from;
__wsum csum;
csum = skb_copy_and_csum_bits(icmp_param->skb,
icmp_param->offset + offset,
to, len, 0);
skb->csum = csum_block_add(skb->csum, csum, odd);
if (icmp_pointers[icmp_param->data.icmph.type].error)
nf_ct_attach(skb, icmp_param->skb);
return 0;
}
| @@ -108,8 +108,7 @@ struct icmp_bxm {
__be32 times[3];
} data;
int head_len;
- struct ip_options replyopts;
- unsigned char optbuf[40];
+ struct ip_options_data replyopts;
};
/* An array of errno for error messages from dest unreach. */
@@ -333,7 +332,7 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb)
struct inet_sock *inet;
__be32 daddr;
- if (ip_options_echo(&icmp_param->replyopts, skb))
+ if (ip_options_echo(&icmp_param->replyopts.opt.opt, skb))
return;
sk = icmp_xmit_lock(net);
@@ -347,10 +346,10 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb)
daddr = ipc.addr = rt->rt_src;
ipc.opt = NULL;
ipc.tx_flags = 0;
- if (icmp_param->replyopts.optlen) {
- ipc.opt = &icmp_param->replyopts;
- if (ipc.opt->srr)
- daddr = icmp_param->replyopts.faddr;
+ if (icmp_param->replyopts.opt.opt.optlen) {
+ ipc.opt = &icmp_param->replyopts.opt;
+ if (ipc.opt->opt.srr)
+ daddr = icmp_param->replyopts.opt.opt.faddr;
}
{
struct flowi4 fl4 = {
@@ -379,8 +378,8 @@ static struct rtable *icmp_route_lookup(struct net *net, struct sk_buff *skb_in,
struct icmp_bxm *param)
{
struct flowi4 fl4 = {
- .daddr = (param->replyopts.srr ?
- param->replyopts.faddr : iph->saddr),
+ .daddr = (param->replyopts.opt.opt.srr ?
+ param->replyopts.opt.opt.faddr : iph->saddr),
.saddr = saddr,
.flowi4_tos = RT_TOS(tos),
.flowi4_proto = IPPROTO_ICMP,
@@ -581,7 +580,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
IPTOS_PREC_INTERNETCONTROL) :
iph->tos;
- if (ip_options_echo(&icmp_param.replyopts, skb_in))
+ if (ip_options_echo(&icmp_param.replyopts.opt.opt, skb_in))
goto out_unlock;
@@ -597,7 +596,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
icmp_param.offset = skb_network_offset(skb_in);
inet_sk(sk)->tos = tos;
ipc.addr = iph->saddr;
- ipc.opt = &icmp_param.replyopts;
+ ipc.opt = &icmp_param.replyopts.opt;
ipc.tx_flags = 0;
rt = icmp_route_lookup(net, skb_in, iph, saddr, tos,
@@ -613,7 +612,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info)
room = dst_mtu(&rt->dst);
if (room > 576)
room = 576;
- room -= sizeof(struct iphdr) + icmp_param.replyopts.optlen;
+ room -= sizeof(struct iphdr) + icmp_param.replyopts.opt.opt.optlen;
room -= sizeof(struct icmphdr);
icmp_param.data_len = skb_in->len - icmp_param.offset; | CWE-362 | null | null |
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