File size: 1,517 Bytes
281d6f5 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | diff --git a/src/main/java/io/airlift/compress/snappy/SnappyRawDecompressor.java b/src/main/java/io/airlift/compress/snappy/SnappyRawDecompressor.java
index 2871b9a..b11907b 100644
--- a/src/main/java/io/airlift/compress/snappy/SnappyRawDecompressor.java
+++ b/src/main/java/io/airlift/compress/snappy/SnappyRawDecompressor.java
@@ -306,6 +306,9 @@ public final class SnappyRawDecompressor
}
}
}
+ if (result < 0) {
+ throw new MalformedInputException(compressedAddress, "negative compressed length");
+ }
return new int[] {result, bytesRead};
}
diff --git a/src/test/java/io/airlift/compress/snappy/TestSnappy.java b/src/test/java/io/airlift/compress/snappy/TestSnappy.java
index b2e92d7..36f39fe 100644
--- a/src/test/java/io/airlift/compress/snappy/TestSnappy.java
+++ b/src/test/java/io/airlift/compress/snappy/TestSnappy.java
@@ -67,4 +67,14 @@ public class TestSnappy
assertThatThrownBy(() -> new SnappyDecompressor().decompress(data, 0, data.length, new byte[1024], 0, 1024))
.isInstanceOf(MalformedInputException.class);
}
+
+ @Test
+ public void testNegativeLength()
+ {
+ byte[] data = {(byte) 255, (byte) 255, (byte) 255, (byte) 255, 0b0000_1000};
+
+ assertThatThrownBy(() -> SnappyDecompressor.getUncompressedLength(data, 0))
+ .isInstanceOf(MalformedInputException.class)
+ .hasMessageStartingWith("negative compressed length");
+ }
}
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