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Check for out of bound bands limit in mpc v8 decoder. 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Laurent Aimar 2011-09-25 13:43:38 +02:00 committed by Michael Niedermayer
parent 7ec5ea437f
commit 508e47a575
1 changed files with 4 additions and 0 deletions
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4
libavcodec/mpc8.c
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@ -127,6 +127,8 @@ static av_cold int mpc8_decode_init(AVCodecContext * avctx)
skip_bits(&gb, 3);//sample rate
c->maxbands = get_bits(&gb, 5) + 1;
if (c->maxbands >= BANDS)
return AVERROR_INVALIDDATA;
channels = get_bits(&gb, 4) + 1;
if (channels > 2) {
av_log_missing_feature(avctx, "Multichannel MPC SV8", 1);
@ -260,6 +262,8 @@ static int mpc8_decode_frame(AVCodecContext * avctx,
maxband = c->last_max_band + get_vlc2(gb, band_vlc.table, MPC8_BANDS_BITS, 2);
if(maxband > 32) maxband -= 33;
}
if(maxband > c->maxbands)
return AVERROR_INVALIDDATA;
c->last_max_band = maxband;
/* read subband indexes */