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avformat/mov: Check channels for mov_parse_stsd_audio()

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Fixes: signed integer overflow: -776522110086937600 * 16 cannot be represented in type 'long'
Fixes: 40563/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-6644829447127040

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 3a64a4c582)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2021-11-07 13:48:24 +01:00
parent d4ff904e30
commit 4ff9f77240
1 changed files with 4 additions and 0 deletions
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4
libavformat/mov.c
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@ -2551,6 +2551,10 @@ int ff_mov_read_stsd_entries(MOVContext *c, AVIOContext *pb, int entries)
av_log(c->fc, AV_LOG_ERROR, "Invalid sample rate %d\n", st->codecpar->sample_rate);
return AVERROR_INVALIDDATA;
}
if (st->codecpar->channels < 0) {
av_log(c->fc, AV_LOG_ERROR, "Invalid channels %d\n", st->codecpar->channels);
return AVERROR_INVALIDDATA;
}
} else if (st->codecpar->codec_type==AVMEDIA_TYPE_SUBTITLE){
mov_parse_stsd_subtitle(c, pb, st, sc,
size - (avio_tell(pb) - start_pos));