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authorJanne Grunau <janne-libav@jannau.net>2012-01-25 15:49:54 +0100
committerJanne Grunau <janne-libav@jannau.net>2012-02-01 12:54:39 +0100
commit510ef04a461b3b54a762c6141ad880cbed85981f (patch)
treebe49c13066e1885b86da45073495fec631f36c43
parentcb0b284381ea506a54c59c4968cd2c2c937f4d75 (diff)
downloadffmpeg-510ef04a461b3b54a762c6141ad880cbed85981f.tar.gz
vc1: prevent null pointer dereference on broken files
CC: libav-stable@libav.org
-rw-r--r--libavcodec/vc1dec.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index 325cc64fef..417bd046b7 100644
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -5709,7 +5709,7 @@ static int vc1_decode_frame(AVCodecContext *avctx, void *data,
if (!v->field_mode || v->second_field)
s->end_mb_y = (i == n_slices ) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
else
- s->end_mb_y = (i == n_slices1 + 1) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
+ s->end_mb_y = (i <= n_slices1 + 1) ? mb_height : FFMIN(mb_height, slices[i].mby_start % mb_height);
vc1_decode_blocks(v);
if (i != n_slices)
s->gb = slices[i].gb;