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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-07-03 23:02:16 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-14 16:51:29 +0200 |
| commit | 4d81550df9580b454d2530bcb37de20b8354ad6e (patch) | |
| tree | 612e1ce73434106beccfd9291ba43c8555f0de96 | |
| parent | bbc24363f137377376cea59a48affe7c556b8c30 (diff) | |
| download | ffmpeg-4d81550df9580b454d2530bcb37de20b8354ad6e.tar.gz | |
avformat/utils: Ignore negative duration in codec_info_duration computation
Fixes: signed integer overflow: -5994697211974418462 + -3255307777713450286 cannot be represented in type 'long'
Fixes: 35332/clusterfuzz-testcase-minimized-ffmpeg_dem_MATROSKA_fuzzer-5868035117285376
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavformat/utils.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavformat/utils.c b/libavformat/utils.c index b56190d2da..a322137fcf 100644 --- a/libavformat/utils.c +++ b/libavformat/utils.c @@ -3813,7 +3813,7 @@ int avformat_find_stream_info(AVFormatContext *ic, AVDictionary **options) av_packet_unref(pkt1); break; } - if (pkt->duration) { + if (pkt->duration > 0) { if (avctx->codec_type == AVMEDIA_TYPE_SUBTITLE && pkt->pts != AV_NOPTS_VALUE && st->start_time != AV_NOPTS_VALUE && pkt->pts >= st->start_time && (uint64_t)pkt->pts - st->start_time < INT64_MAX ) { |