File ffmpeg-CVE-2022-3109.patch of Package ffmpeg.28802

diff --unified --recursive --text --new-file --color ffmpeg-3.4.2.old/libavcodec/vp3.c ffmpeg-3.4.2.new/libavcodec/vp3.c
--- ffmpeg-3.4.2.old/libavcodec/vp3.c	2022-12-26 14:31:04.018496321 +0800
+++ ffmpeg-3.4.2.new/libavcodec/vp3.c	2022-12-26 14:31:12.785166998 +0800
@@ -2099,8 +2099,13 @@
     if (ff_thread_get_buffer(avctx, &s->current_frame, AV_GET_BUFFER_FLAG_REF) < 0)
         goto error;
 
-    if (!s->edge_emu_buffer)
+    if (!s->edge_emu_buffer) {
         s->edge_emu_buffer = av_malloc(9 * FFABS(s->current_frame.f->linesize[0]));
+        if (!s->edge_emu_buffer) {
+            ret = AVERROR(ENOMEM);
+            goto error;
+        }
+    }
 
     if (s->keyframe) {
         if (!s->theora) {