Add range checking of partition for MBR.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2409 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 3 insertions, 3 deletions

diff --git a/EdkModulePkg/Universal/Disk/Partition/Dxe/Mbr.c b/EdkModulePkg/Universal/Disk/Partition/Dxe/Mbr.c
index 8dd0b4b497..f1b1de0d64 100644
--- a/EdkModulePkg/Universal/Disk/Partition/Dxe/Mbr.c
+++ b/EdkModulePkg/Universal/Disk/Partition/Dxe/Mbr.c
@@ -1,6 +1,6 @@
 /*++

 

-Copyright (c) 2006, Intel Corporation                                                         

+Copyright (c) 2006 - 2007, Intel Corporation                                                         

 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        

@@ -276,8 +276,8 @@ Returns:
       HdDev.PartitionNumber = PartitionNumber ++;

       HdDev.PartitionStart  = UNPACK_UINT32 (Mbr->Partition[0].StartingLBA) + ExtMbrStartingLba + ParentHdDev.PartitionStart;

       HdDev.PartitionSize   = UNPACK_UINT32 (Mbr->Partition[0].SizeInLBA);

-      if (HdDev.PartitionStart + HdDev.PartitionSize - 1 >=

-            ParentHdDev.PartitionStart + ParentHdDev.PartitionSize) {

+      if ((HdDev.PartitionStart + HdDev.PartitionSize - 1 >= ParentHdDev.PartitionStart + ParentHdDev.PartitionSize) ||

+          (HdDev.PartitionStart <= ParentHdDev.PartitionStart)) {

         break;

       }