Bug-Id: 1101
Cc: [email protected]
---
libavcodec/vc1_mc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavcodec/vc1_mc.c b/libavcodec/vc1_mc.c
index f4632d6..fb5ca75 100644
--- a/libavcodec/vc1_mc.c
+++ b/libavcodec/vc1_mc.c
@@ -713,6 +713,11 @@ void ff_vc1_mc_4mv_chroma4(VC1Context *v, int dir, int
dir2, int avg)
lutuv = v->next_lutuv;
use_ic = v->next_use_ic;
} else {
+ if (!s->last_picture.f->data[1]) {
+ av_log(s->avctx, AV_LOG_WARNING, "Bad data in last picture
frame.\n");
+ return;
+ }
+
srcU = s->last_picture.f->data[1] + uvsrc_y * s->uvlinesize +
uvsrc_x;
srcV = s->last_picture.f->data[2] + uvsrc_y * s->uvlinesize +
uvsrc_x;
lutuv = v->last_lutuv;
--
2.7.4
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