ffmpeg | branch: release/0.7 | Michael Niedermayer <michae...@gmx.at> | Fri Oct
3 14:45:04 2014 +0200| [73962e677d871fa0dde5385ee04ea07c048d8864] | committer:
Michael Niedermayer
avcodec/mmvideo: Bounds check 2nd line of HHV Intra blocks
Fixes out of array access
Fixes: asan_heap-oob_4da4f3_8_asan_heap-oob_4da4f3_419_scene1a.mm
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michae...@gmx.at>
(cherry picked from commit 8b0e96e1f21b761ca15dbb470cd619a1ebf86c3e)
Conflicts:
libavcodec/mmvideo.c
Signed-off-by: Michael Niedermayer <michae...@gmx.at>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=73962e677d871fa0dde5385ee04ea07c048d8864
---
libavcodec/mmvideo.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/mmvideo.c b/libavcodec/mmvideo.c
index 707ddc5..0136bf8 100644
--- a/libavcodec/mmvideo.c
+++ b/libavcodec/mmvideo.c
@@ -105,7 +105,7 @@ static void mm_decode_intra(MmContext * s, int half_horiz,
int half_vert, const
if (color) {
memset(s->frame.data[0] + y*s->frame.linesize[0] + x, color,
run_length);
- if (half_vert)
+ if (half_vert && y + half_vert < s->avctx->height)
memset(s->frame.data[0] + (y+1)*s->frame.linesize[0] + x,
color, run_length);
}
x+= run_length;
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