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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-04-29 20:28:46 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-05-17 02:23:06 +0200 |
| commit | b3a18511cc93082ebecce0861bc15d7f548492e0 (patch) | |
| tree | d95053e607f5a5b64ce9c3dac7730c51fdc6864d /libavcodec | |
| parent | 9e5d0860c043ba5d1e48c0f8c42b0fe3b6cbeba4 (diff) | |
| download | ffmpeg-b3a18511cc93082ebecce0861bc15d7f548492e0.tar.gz | |
avcodec/mpeg4videodec: Check bps (VOL header) before VOP for studio profile
Fixes: runtime error: shift exponent -1 is negative
Fixes: 7486/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG4_fuzzer-4977380939530240
Fixes: runtime error: index 36 out of bounds for type 'const uint8_t [32]'
Fixes: 7566/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEG4_fuzzer-6536620682510336
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/mpeg4videodec.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/libavcodec/mpeg4videodec.c b/libavcodec/mpeg4videodec.c index 33cdc7a1b2..ada5cdc6fa 100644 --- a/libavcodec/mpeg4videodec.c +++ b/libavcodec/mpeg4videodec.c @@ -3217,9 +3217,13 @@ end: s->low_delay = 1; s->avctx->has_b_frames = !s->low_delay; - if (s->studio_profile) + if (s->studio_profile) { + if (!s->avctx->bits_per_raw_sample) { + av_log(s->avctx, AV_LOG_ERROR, "Missing VOL header\n"); + return AVERROR_INVALIDDATA; + } return decode_studio_vop_header(ctx, gb); - else + } else return decode_vop_header(ctx, gb); } |