Validate some fields in PE image to make sure not access violation for later code.

Signed-off-by: Eric Dong <eric.dong@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13211 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Core/Dxe/Image/Image.c

@@ -1,7 +1,7 @@
 /** @file
   Core image handling services to load and unload PeImage.
 
-Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
 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
@@ -232,6 +232,14 @@ CoreReadImageFile (
   UINTN               EndPosition;
   IMAGE_FILE_HANDLE  *FHand;
 
+  if (UserHandle == NULL || ReadSize == NULL || Buffer == NULL) {
+    return EFI_INVALID_PARAMETER;
+  }
+
+  if (MAX_ADDRESS - Offset < *ReadSize) {
+    return EFI_INVALID_PARAMETER;
+  }
+
   FHand = (IMAGE_FILE_HANDLE  *)UserHandle;
   ASSERT (FHand->Signature == IMAGE_FILE_HANDLE_SIGNATURE);