From 85f477935cd6b34e6ec2716b20e15ce748277a89 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Fri, 20 Apr 2012 17:42:18 +0200
Subject: [PATCH] avsdec: Set dimensions instead of relying on the demuxer.
The decode function assumes that the video will have those dimensions.
Fixes CVE-2012-2801
CC:libav-stable@libav.org
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Anton Khirnov <anton@khirnov.net>
---
libavcodec/avs.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/libavcodec/avs.c b/libavcodec/avs.c
index d4e28372127..b8ee1e1ff29 100644
--- a/libavcodec/avs.c
+++ b/libavcodec/avs.c
@@ -158,6 +158,7 @@ avs_decode_frame(AVCodecContext * avctx,
static av_cold int avs_decode_init(AVCodecContext * avctx)
{
avctx->pix_fmt = PIX_FMT_PAL8;
+ avcodec_set_dimensions(avctx, 318, 198);
return 0;
}
--
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