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smacker: sanity check audio size. 

Fixes, excessive memory allocation
Fixes Ticket1892

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-11-24 18:02:08 +01:00
parent 014058abea
commit 57c0da6fe4
1 changed files with 5 additions and 0 deletions
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5
libavcodec/smacker.c
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@ -608,6 +608,11 @@ static int smka_decode_frame(AVCodecContext *avctx, void *data,
unp_size = AV_RL32(buf);
if (unp_size > (1U<<24)) {
av_log(avctx, AV_LOG_ERROR, "packet is too big\n");
return AVERROR_INVALIDDATA;
}
init_get_bits(&gb, buf + 4, (buf_size - 4) * 8);
if(!get_bits1(&gb)){