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astdec: fix division by zero

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Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
(cherry picked from commit 9959a52b14bcfa3e5baeb3fc8a86c04bbc0d3d5d)
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
This commit is contained in:
Andreas Cadhalpun 2016-10-16 22:39:47 +02:00
parent 230c04e3f6
commit b3991ccd11
1 changed files with 1 additions and 1 deletions
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2
libavformat/astdec.c
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@ -90,7 +90,7 @@ static int ast_read_packet(AVFormatContext *s, AVPacket *pkt)
pos = avio_tell(s->pb);
type = avio_rl32(s->pb);
size = avio_rb32(s->pb);
if (size > INT_MAX / s->streams[0]->codecpar->channels)
if (!s->streams[0]->codecpar->channels || size > INT_MAX / s->streams[0]->codecpar->channels)
return AVERROR_INVALIDDATA;
size *= s->streams[0]->codecpar->channels;