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cook: check subbands more completely, fix out of array read.

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Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-11-17 03:42:48 +01:00
parent 84281d111c
commit 774830050a
1 changed files with 4 additions and 0 deletions
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4
libavcodec/cook.c
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@ -1197,6 +1197,10 @@ static av_cold int cook_decode_init(AVCodecContext *avctx)
av_log_ask_for_sample(avctx, "subbands > 50\n");
return AVERROR_PATCHWELCOME;
}
if (q->subpacket[s].subbands == 0) {
av_log_ask_for_sample(avctx, "subbands is 0\n");
return AVERROR_PATCHWELCOME;
}
q->subpacket[s].gains1.now = q->subpacket[s].gain_1;
q->subpacket[s].gains1.previous = q->subpacket[s].gain_2;
q->subpacket[s].gains2.now = q->subpacket[s].gain_3;