From 97c74782a6e64573adfaeb012d635e40d2231637 Mon Sep 17 00:00:00 2001
From: klu2 <klu2@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Thu, 11 Feb 2010 05:53:06 +0000
Subject: [PATCH] GraphicsOutputBlt() need judge parameter

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9985 6f19259b-4bc3-4df7-8a09-765794883524
---
 .../Universal/Console/ConSplitterDxe/ConSplitterGraphics.c  | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/MdeModulePkg/Universal/Console/ConSplitterDxe/ConSplitterGraphics.c b/MdeModulePkg/Universal/Console/ConSplitterDxe/ConSplitterGraphics.c
index f01e0a7b8d..5b11f2114b 100644
--- a/MdeModulePkg/Universal/Console/ConSplitterDxe/ConSplitterGraphics.c
+++ b/MdeModulePkg/Universal/Console/ConSplitterDxe/ConSplitterGraphics.c
@@ -1,7 +1,7 @@
 /** @file
   Support for Graphics output spliter.
   
-Copyright (c) 2006 - 2009, Intel Corporation. <BR>
+Copyright (c) 2006 - 2010, Intel Corporation. <BR>
 All rights reserved. This program and the accompanying materials
 are licensed and made available under the terms and conditions of the BSD License
 which accompanies this distribution.  The full text of the license may be found at
@@ -239,6 +239,10 @@ ConSplitterGraphicsOutputBlt (
   EFI_GRAPHICS_OUTPUT_PROTOCOL    *GraphicsOutput;
   EFI_UGA_DRAW_PROTOCOL           *UgaDraw;
 
+  if (This == NULL || ((UINTN) BltOperation) >= EfiGraphicsOutputBltOperationMax) {
+    return EFI_INVALID_PARAMETER;
+  }
+  
   Private = GRAPHICS_OUTPUT_SPLITTER_PRIVATE_DATA_FROM_THIS (This);
 
   ReturnStatus = EFI_SUCCESS;