From 8b0e96e1f21b761ca15dbb470cd619a1ebf86c3e Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Fri, 3 Oct 2014 14:45:04 +0200
Subject: [PATCH] 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 <michaelni@gmx.at>
---
libavcodec/mmvideo.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/mmvideo.c b/libavcodec/mmvideo.c
index 026d4630aeb..9ff6393aec7 100644
--- a/libavcodec/mmvideo.c
+++ b/libavcodec/mmvideo.c
@@ -109,7 +109,7 @@ static int mm_decode_intra(MmContext * s, int half_horiz, int half_vert)
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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