From 508e47a5751b063e5b3d1d6aceda8a19ad8b1d37 Mon Sep 17 00:00:00 2001 From: Laurent Aimar Date: Sun, 25 Sep 2011 13:43:38 +0200 Subject: [PATCH] Check for out of bound bands limit in mpc v8 decoder. Signed-off-by: Michael Niedermayer --- libavcodec/mpc8.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/mpc8.c b/libavcodec/mpc8.c index cae7244ed5..436d7baa84 100644 --- a/libavcodec/mpc8.c +++ b/libavcodec/mpc8.c @@ -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 */