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smacker: Avoid integer overflow when allocating packets

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Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2013-09-11 15:25:13 +03:00
parent 8d928023f9
commit 710b0e2702
1 changed files with 1 additions and 1 deletions
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2
libavformat/smacker.c
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@ -327,7 +327,7 @@ static int smacker_read_packet(AVFormatContext *s, AVPacket *pkt)
}
flags >>= 1;
}
if (frame_size < 0)
if (frame_size < 0 || frame_size >= INT_MAX/2)
return AVERROR_INVALIDDATA;
if (av_new_packet(pkt, frame_size + 769))
return AVERROR(ENOMEM);