From b8dc5f8bb3b14bfd2289a0444c7b706299555d97 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Fri, 9 Nov 2012 18:45:41 +0100 Subject: [PATCH] twinvq: check bitrate for validity avoid division by 0 Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer --- libavcodec/twinvq.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/twinvq.c b/libavcodec/twinvq.c index f4eba4d906..7281d9cd2d 100644 --- a/libavcodec/twinvq.c +++ b/libavcodec/twinvq.c @@ -1142,6 +1142,11 @@ static av_cold int twin_decode_init(AVCodecContext *avctx) ibps = avctx->bit_rate / (1000 * avctx->channels); + if (ibps > 255) { + av_log(avctx, AV_LOG_ERROR, "unsupported per channel bitrate %dkbps\n", ibps); + return AVERROR_INVALIDDATA; + } + switch ((isampf << 8) + ibps) { case (8 <<8) + 8: tctx->mtab = &mode_08_08; break; case (11<<8) + 8: tctx->mtab = &mode_11_08; break;