From c55a6bac6c3c976a2861faaa96634cdf2176f44c Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 14 May 2015 20:49:25 +0200 Subject: [PATCH] avcodec/dcadec: Check nchans Fixes CID1239110 Signed-off-by: Michael Niedermayer (cherry picked from commit a6a45774d045007f8262cd7c614804390e53122e) Signed-off-by: Michael Niedermayer --- libavcodec/dcadec.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/libavcodec/dcadec.c b/libavcodec/dcadec.c index 7d798b00fb..7cdf4b4beb 100644 --- a/libavcodec/dcadec.c +++ b/libavcodec/dcadec.c @@ -583,6 +583,14 @@ static int dca_parse_audio_coding_header(DCAContext *s, int base_channel, } nchans = get_bits(&s->gb, 3) + 1; + if (xxch && nchans >= 3) { + av_log(s->avctx, AV_LOG_ERROR, "nchans %d is too large\n", nchans); + return AVERROR_INVALIDDATA; + } else if (nchans + base_channel > DCA_PRIM_CHANNELS_MAX) { + av_log(s->avctx, AV_LOG_ERROR, "channel sum %d + %d is too large\n", nchans, base_channel); + return AVERROR_INVALIDDATA; + } + s->total_channels = nchans + base_channel; s->prim_channels = s->total_channels;