From 582368626188c070d4300913c6da5efa4c24cfb2 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Thu, 13 Dec 2012 17:53:31 +0100
Subject: mpeg12: do not decode extradata more than once.

Fixes CVE-2012-2803.

CC: libav-stable@libav.org
---
 libavcodec/mpeg12.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'libavcodec/mpeg12.h')

diff --git a/libavcodec/mpeg12.h b/libavcodec/mpeg12.h
index ab0352ff10..0f9faaf19c 100644
--- a/libavcodec/mpeg12.h
+++ b/libavcodec/mpeg12.h
@@ -42,6 +42,7 @@ typedef struct Mpeg1Context {
     AVRational frame_rate_ext;       ///< MPEG-2 specific framerate modificator
     int sync;                        ///< Did we reach a sync point like a GOP/SEQ/KEYFrame?
     int closed_gop;                  ///< GOP is closed
+    int extradata_decoded;
 } Mpeg1Context;
 
 extern uint8_t ff_mpeg12_static_rl_table_store[2][2][2*MAX_RUN + MAX_LEVEL + 3];
-- 
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