tasks/codeql_java_benchmark_top30_v2/morefixes-462566b2f857f458bf20/patch.diff

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");
+    }
 }