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check region depth for validity
author
Michael Niedermayer
<michaelni@gmx.at>
Mon, 19 Nov 2007 20:14:46 +0000
(20:14 +0000)
committer
Michael Niedermayer
<michaelni@gmx.at>
Mon, 19 Nov 2007 20:14:46 +0000
(20:14 +0000)
(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
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diff --git
a/libavcodec/dvbsubdec.c
b/libavcodec/dvbsubdec.c
index
b410a24
..
b51603f
100644
(file)
--- 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)