Fixes: Timeout (35sec -> 6sec) Fixes: 16901/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MPEGVIDEO_fuzzer-5729024726269952
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/mpeg12dec.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/mpeg12dec.c b/libavcodec/mpeg12dec.c index 83e537884b..ecfc2a440d 100644 --- a/libavcodec/mpeg12dec.c +++ b/libavcodec/mpeg12dec.c @@ -1596,6 +1596,9 @@ static int mpeg_field_start(MpegEncContext *s, const uint8_t *buf, int buf_size) Mpeg1Context *s1 = (Mpeg1Context *) s; int ret; + if (s->mb_width * s->mb_height * 11LL / (33 * 2 * 8) > buf_size) + return AVERROR_INVALIDDATA; + /* start frame decoding */ if (s->first_field || s->picture_structure == PICT_FRAME) { AVFrameSideData *pan_scan; -- 2.23.0 _______________________________________________ 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".
