| Message ID | 20210131191818.17203-1-michael@niedermayer.cc |
|---|---|
| State | Accepted |
| Commit | 0791a515d38fd35c1e2a309ec8f4015153687b8c |
| Headers | show |
| Series | [FFmpeg-devel,01/12] avcodec/hevc_sei: Check payload size in decode_nal_sei_message() | expand |
| Context | Check | Description |
|---|---|---|
| andriy/x86_make | success | Make finished |
| andriy/x86_make_fate | success | Make fate finished |
| andriy/PPC64_make | success | Make finished |
| andriy/PPC64_make_fate | success | Make fate finished |
On Sun, Jan 31, 2021 at 08:18:07PM +0100, Michael Niedermayer wrote: > 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 <michael@niedermayer.cc> > --- > libavcodec/hevc_sei.c | 2 ++ > 1 file changed, 2 insertions(+) will apply patchset [...]
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 */
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 <michael@niedermayer.cc> --- libavcodec/hevc_sei.c | 2 ++ 1 file changed, 2 insertions(+)