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avformat/aiffdec: Use 64bit for block_duration use 

Fixes: signed integer overflow: 3 * -2147483648 cannot be represented in type 'int'
Fixes: 50993/clusterfuzz-testcase-minimized-ffmpeg_dem_AIFF_fuzzer-6668935979728896

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 9303ba272e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2022-09-17 16:32:09 +02:00
parent f129928164
commit 9053465771
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1 changed files with 1 additions and 1 deletions
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libavformat/aiffdec.c
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@ -422,7 +422,7 @@ static int aiff_read_packet(AVFormatContext *s,
pkt->flags &= ~AV_PKT_FLAG_CORRUPT;
/* Only one stream in an AIFF file */
pkt->stream_index = 0;
pkt->duration = (res / st->codecpar->block_align) * aiff->block_duration;
pkt->duration = (res / st->codecpar->block_align) * (int64_t) aiff->block_duration;
return 0;
}