[FFmpeg-devel] [PATCH] libavfilter: avoid UB nullptr-with-offset.

[Jeremy Leconte]

---
 libavfilter/vf_scale.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavfilter/vf_scale.c b/libavfilter/vf_scale.c
index 58eee96744..98cef5eb4b 100644
--- a/libavfilter/vf_scale.c
+++ b/libavfilter/vf_scale.c
@@ -631,7 +631,7 @@ static int scale_slice(AVFilterLink *link, AVFrame *out_buf, AVFrame *cur_pic, s
     int in_stride[4],out_stride[4];
     int i;
 
-    for (i=0; i<4; i++) {
+    for (i=0; i<4 && cur_pic->data[i] != NULL; i++) {
         int vsub= ((i+1)&2) ? scale->vsub : 0;
          in_stride[i] = cur_pic->linesize[i] * mul;
         out_stride[i] = out_buf->linesize[i] * mul;
-- 
2.30.0.478.g8a0d178c01-goog