From 28bf685bfc6d0c744369cdf367f61a78d80d0b01 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Thu, 15 Nov 2012 16:41:28 +0100
Subject: [PATCH] pgssubdec: check RLE size before copying. Fix out of array
 accesses

Upstream-Status: Backport

Commit 28bf685bfc6d0c744369cdf367f61a78d80d0b01 release/1.1

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit c0d68be555f5858703383040e04fcd6529777061)
---
 libavcodec/pgssubdec.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavcodec/pgssubdec.c b/libavcodec/pgssubdec.c
index 728f178..26a3c2a 100644
--- a/gst-libs/ext/libav/libavcodec/pgssubdec.c
+++ b/gst-libs/ext/libav/libavcodec/pgssubdec.c
@@ -202,6 +202,11 @@ static int parse_picture_segment(AVCodec
         return -1;
     }
 
+    if (buf_size > rle_bitmap_len) {
+        av_log(avctx, AV_LOG_ERROR, "too much RLE data\n");
+        return AVERROR_INVALIDDATA;
+    }
+
     ctx->picture.w = width;
     ctx->picture.h = height;
 
--