From 2867ed9b1c0561b0e50d9c4f73e09621333e2f1f Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Mon, 19 Nov 2007 20:14:46 +0000
Subject: [PATCH] check region depth for validity (32/64/128 would crash at
least due to 1<<depth allocation later, and no i do not have a sample file)
Originally committed as revision 11062 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavcodec/dvbsubdec.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/libavcodec/dvbsubdec.c b/libavcodec/dvbsubdec.c
index b410a24b255..b51603f30e1 100644
--- a/libavcodec/dvbsubdec.c
+++ b/libavcodec/dvbsubdec.c
@@ -1035,6 +1035,10 @@ static void dvbsub_parse_region_segment(AVCodecContext *avctx,
}
region->depth = 1 << (((*buf++) >> 2) & 7);
+ if(region->depth<2 || region->depth>8){
+ av_log(avctx, AV_LOG_ERROR, "region depth %d is invalid\n", region->depth);
+ region->depth= 4;
+ }
region->clut = *buf++;
if (region->depth == 8)
--
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