Fixes: out of array access
Fixes: 
29392/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-4821602850177024.fuzz

Found-by: continuous fuzzing process 
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
 libavcodec/hevc_sei.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/libavcodec/hevc_sei.c b/libavcodec/hevc_sei.c
index 227560c55b..c881c4338c 100644
--- a/libavcodec/hevc_sei.c
+++ b/libavcodec/hevc_sei.c
@@ -463,6 +463,8 @@ static int decode_nal_sei_message(GetBitContext *gb, void 
*logctx, HEVCSEI *s,
         byte          = get_bits(gb, 8);
         payload_size += byte;
     }
+    if (get_bits_left(gb) < 8LL*payload_size)
+        return AVERROR_INVALIDDATA;
     if (nal_unit_type == HEVC_NAL_SEI_PREFIX) {
         return decode_nal_sei_prefix(gb, logctx, s, ps, payload_type, 
payload_size);
     } else { /* nal_unit_type == NAL_SEI_SUFFIX */
-- 
2.17.1

_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel

To unsubscribe, visit link above, or email
ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".

Reply via email to