avfilter/vf_blend: fix un-checked potential memory allocation failure

Wu Jianhua committed 4 years ago

Commit 49250b51 parent aa8bb051 file · +5 −1Browse files

Unified · Split

libavfilter/vf_blend.c+5−1

@@ -279,7 +279,11 @@ static AVFrame blend_frame(AVFilterContext ctx, AVFrame *top_buf, · 278 unmodified lines
279	279	dst_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h);
280	280	if (!dst_buf)
281	281	return top_buf;
282		− av_frame_copy_props(dst_buf, top_buf);
	282	+
	283	+ if (av_frame_copy_props(dst_buf, top_buf) < 0) {
	284	+ av_frame_free(&dst_buf);
	285	+ return top_buf;
	286	+ }
283	287
284	288	for (plane = 0; plane < s->nb_planes; plane++) {
285	289	int hsub = plane == 1 \|\| plane == 2 ? s->hsub : 0;