From a70a20d41e13f94d9546937745848eaf3f8cb237 Mon Sep 17 00:00:00 2001
From: Andrew Calvano <calvano@meta.com>
Date: Mon, 25 Sep 2023 11:28:16 -0700
Subject: [PATCH] Fix out of bound read in WelsDec::NeedErrorCon

---
 codec/decoder/core/src/error_concealment.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/codec/decoder/core/src/error_concealment.cpp b/codec/decoder/core/src/error_concealment.cpp
index 5e10af1f75..2067ffdce6 100644
--- a/codec/decoder/core/src/error_concealment.cpp
+++ b/codec/decoder/core/src/error_concealment.cpp
@@ -452,7 +452,7 @@ int32_t MarkECFrameAsRef (PWelsDecoderContext pCtx) {
 
 bool NeedErrorCon (PWelsDecoderContext pCtx) {
   bool bNeedEC = false;
-  int32_t iMbNum = pCtx->pSps->iMbWidth * pCtx->pSps->iMbHeight;
+  int32_t iMbNum = pCtx->sMb.iMbWidth * pCtx->sMb.iMbHeight;
   for (int32_t i = 0; i < iMbNum; ++i) {
     if (!pCtx->pCurDqLayer->pMbCorrectlyDecodedFlag[i]) {
       bNeedEC = true;