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avformat/iff: Use 64bit in duration computation 

Fixes: signed integer overflow: 588 * 16719904 cannot be represented in type 'int'
Fixes: 29102/clusterfuzz-testcase-minimized-ffmpeg_dem_IFF_fuzzer-6748331936186368

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2021-04-24 15:41:16 +02:00
parent 6ea494befc
commit 93d964689c
1 changed files with 1 additions and 1 deletions
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libavformat/iff.c
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@ -384,7 +384,7 @@ static int read_dst_frame(AVFormatContext *s, AVPacket *pkt)
avio_skip(pb, 1);
pkt->flags |= AV_PKT_FLAG_KEY;
pkt->stream_index = 0;
pkt->duration = 588 * s->streams[0]->codecpar->sample_rate / 44100;
pkt->duration = 588LL * s->streams[0]->codecpar->sample_rate / 44100;
pkt->pos = chunk_pos;
chunk_pos = avio_tell(pb);