From 601afc03569bd62795dcb4736521862494300e8c Mon Sep 17 00:00:00 2001
From: xli24 <xli24@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Thu, 10 Dec 2009 09:24:40 +0000
Subject: Add legacy region range check.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9549 6f19259b-4bc3-4df7-8a09-765794883524
---
 MdeModulePkg/Universal/LegacyRegion2Dxe/LegacyRegion2.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

(limited to 'MdeModulePkg')

diff --git a/MdeModulePkg/Universal/LegacyRegion2Dxe/LegacyRegion2.c b/MdeModulePkg/Universal/LegacyRegion2Dxe/LegacyRegion2.c
index 80de38c..9838fa8 100644
--- a/MdeModulePkg/Universal/LegacyRegion2Dxe/LegacyRegion2.c
+++ b/MdeModulePkg/Universal/LegacyRegion2Dxe/LegacyRegion2.c
@@ -64,6 +64,10 @@ LegacyRegion2Decode (
   IN  BOOLEAN                      *On
   )
 {
+  if ((Start < 0xC0000) || ((Start + Length - 1) > 0xFFFFF)) {
+    return EFI_INVALID_PARAMETER;
+  }
+
   ASSERT (Granularity != NULL);
   *Granularity = 0;
   return EFI_SUCCESS;
@@ -98,6 +102,10 @@ LegacyRegion2Lock (
   OUT UINT32                      *Granularity
   )
 {
+  if ((Start < 0xC0000) || ((Start + Length - 1) > 0xFFFFF)) {
+    return EFI_INVALID_PARAMETER;
+  }
+
   ASSERT (Granularity != NULL);
   *Granularity = 0;
   return EFI_SUCCESS;
@@ -137,6 +145,10 @@ LegacyRegion2BootLock (
   OUT UINT32                              *Granularity
   )
 {
+  if ((Start < 0xC0000) || ((Start + Length - 1) > 0xFFFFF)) {
+    return EFI_INVALID_PARAMETER;
+  }
+
   ASSERT (Granularity != NULL);
   *Granularity = 0;
   return EFI_SUCCESS;
@@ -171,6 +183,10 @@ LegacyRegion2Unlock (
   OUT UINT32                       *Granularity
   )
 {
+  if ((Start < 0xC0000) || ((Start + Length - 1) > 0xFFFFF)) {
+    return EFI_INVALID_PARAMETER;
+  }
+
   ASSERT (Granularity != NULL);
   *Granularity = 0;
   return EFI_SUCCESS;
-- 
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