From: xli24 <xli24@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Wed, 28 Feb 2007 06:22:43 +0000 (+0000)
Subject: Add range checking of partition for MBR.
X-Git-Tag: edk2-stable201903~23468
X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=commitdiff_plain;h=2c33bcb4f2bfe2e85d4f6b246b26c96cf971c318

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
---

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;
       }