From 7a0ff7566b66da0b75dfaaca4347c7b41970f0ef 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>
(cherry picked from commit 85f477935cd6b34e6ec2716b20e15ce748277a89)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
---
 libavcodec/avs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/avs.c b/libavcodec/avs.c
index 3ad3d879b5..628a6e3d68 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;
 }