From 49250b582ad109e04efd029cdb96020ef54fc2ee Mon Sep 17 00:00:00 2001
From: Wu Jianhua <jianhua.wu@intel.com>
Date: Sat, 1 Jan 2022 03:17:09 +0800
Subject: [PATCH] avfilter/vf_blend: fix un-checked potential memory allocation
 failure

Signed-off-by: Wu Jianhua <jianhua.wu@intel.com>
---
 libavfilter/vf_blend.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libavfilter/vf_blend.c b/libavfilter/vf_blend.c
index b6f3c4fed3..2d433e439f 100644
--- a/libavfilter/vf_blend.c
+++ b/libavfilter/vf_blend.c
@@ -279,7 +279,11 @@ static AVFrame *blend_frame(AVFilterContext *ctx, AVFrame *top_buf,
     dst_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h);
     if (!dst_buf)
         return top_buf;
-    av_frame_copy_props(dst_buf, top_buf);
+
+    if (av_frame_copy_props(dst_buf, top_buf) < 0) {
+        av_frame_free(&dst_buf);
+        return top_buf;
+    }
 
     for (plane = 0; plane < s->nb_planes; plane++) {
         int hsub = plane == 1 || plane == 2 ? s->hsub : 0;