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avformat/aiffdec: Check block_duration

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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>
This commit is contained in:
Michael Niedermayer
2022-09-17 16:32:08 +02:00
parent c5bd689655
commit 1c2b6265c8
1 changed files with 2 additions and 0 deletions
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libavformat/aiffdec.c
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@@ -372,6 +372,8 @@ got_sound:
av_log(s, AV_LOG_ERROR, "could not find COMM tag or invalid block_align value\n"); av_log(s, AV_LOG_ERROR, "could not find COMM tag or invalid block_align value\n");
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
} }
if (aiff->block_duration < 0)
return AVERROR_INVALIDDATA;
/* Now positioned, get the sound data start and end */ /* Now positioned, get the sound data start and end */
avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate); avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);