From c2409a7c5b1c1f43ee8b00c13ed41edc0321db0b Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 15 Nov 2012 17:44:18 +0100 Subject: [PATCH] vmdav: more complete check for block_align, prevent out of array access. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer --- libavcodec/vmdav.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/vmdav.c b/libavcodec/vmdav.c index 63343fd2ee..6e92e18b00 100644 --- a/libavcodec/vmdav.c +++ b/libavcodec/vmdav.c @@ -497,7 +497,7 @@ static av_cold int vmdaudio_decode_init(AVCodecContext *avctx) av_log(avctx, AV_LOG_ERROR, "invalid number of channels\n"); return AVERROR(EINVAL); } - if (avctx->block_align < 1) { + if (avctx->block_align < 1 || avctx->block_align % avctx->channels) { av_log(avctx, AV_LOG_ERROR, "invalid block align\n"); return AVERROR(EINVAL); }