[FFmpeg-cvslog] swscale: increase yuv2rgb table headroom

[Michael Niedermayer]

ffmpeg | branch: release/2.3 | Michael Niedermayer <michaelni at gmx.at> | Tue Dec 16 22:21:21 2014 +0100| [0f77303c57457fbc7483ac3a6834233e17b167bc] | committer: Michael Niedermayer

swscale: increase yuv2rgb table headroom

Fixes out of array access
Fixes: case2_bad_read_yuv2rgbx32.mp4
Found-by: Michal Zalewski <lcamtuf at coredump.cx>
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=0f77303c57457fbc7483ac3a6834233e17b167bc
---

 libswscale/swscale_internal.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libswscale/swscale_internal.h b/libswscale/swscale_internal.h
index 8d2d56a..7e48a62 100644
--- a/libswscale/swscale_internal.h
+++ b/libswscale/swscale_internal.h
@@ -37,7 +37,7 @@
 
 #define STR(s) AV_TOSTRING(s) // AV_STRINGIFY is too long
 
-#define YUVRGB_TABLE_HEADROOM 128
+#define YUVRGB_TABLE_HEADROOM 256
 
 #define MAX_FILTER_SIZE SWS_MAX_FILTER_SIZE