From 5871971fa1ed98d16954c40a201a00c13b27b92f Mon Sep 17 00:00:00 2001
From: gg0907 <guohui_1701@163.com>
Date: Tue, 3 Jan 2023 16:43:47 +0800
Subject: [PATCH] fix CVE-2022-3109

Signed-off-by: gg0907 <guohui_1701@163.com>
---
 libavcodec/vp3.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c
index 6fe1ca46a3..3a613d8310 100644
--- a/libavcodec/vp3.c
+++ b/libavcodec/vp3.c
@@ -2722,8 +2722,13 @@ static int vp3_decode_frame(AVCodecContext *avctx,
     if ((ret = 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) {
-- 
Gitee