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avformat/mov: Check sample size for overflow in mov_parse_stsd_audio()

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Fixes: signed integer overflow: 2 * 1914708000 cannot be represented in type 'int'
Fixes: 31639/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-6303428239294464

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 d35677736a)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2021-03-17 23:39:04 +01:00
parent c00ad4cc4f
commit 4197e4144b
1 changed files with 1 additions and 1 deletions
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2
libavformat/mov.c
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@ -2233,7 +2233,7 @@ static void mov_parse_stsd_audio(MOVContext *c, AVIOContext *pb,
}
bits_per_sample = av_get_bits_per_sample(st->codecpar->codec_id);
if (bits_per_sample) {
if (bits_per_sample && (bits_per_sample >> 3) * (uint64_t)st->codecpar->channels <= INT_MAX) {
st->codecpar->bits_per_coded_sample = bits_per_sample;
sc->sample_size = (bits_per_sample >> 3) * st->codecpar->channels;
}