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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-11-04 19:02:55 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-11-04 20:26:49 +0100 |
| commit | bc5777bdab7d5515088713f73507d3a49df7695d (patch) | |
| tree | ad289f8d095a42a5bfb8303664d1527eeb8b3dea | |
| parent | 7d23ccac8d371e7ea28960d23a812f6b8446a642 (diff) | |
| download | ffmpeg-bc5777bdab7d5515088713f73507d3a49df7695d.tar.gz | |
avcodec/mpeg4videodec: Clear partitioned frame in decode_studio_vop_header()
partitioned_frame is also set/cleared in decode_vop_header()
Fixes: out of array read
Fixes: 9789/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG4_fuzzer-5638681627983872
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 074187d599a2ece2bdf77bd08b4b797c5800eda6)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/mpeg4videodec.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c index 233b8525ce..f44ee76bd4 100644 --- a/libavcodec/mpeg4videodec.c +++ b/libavcodec/mpeg4videodec.c @@ -3056,6 +3056,7 @@ static int decode_studio_vop_header(Mpeg4DecContext *ctx, GetBitContext *gb) if (get_bits_left(gb) <= 32) return 0; + s->partitioned_frame = 0; s->decode_mb = mpeg4_decode_studio_mb; decode_smpte_tc(ctx, gb); |