[PATCH v3 1/3] MdeModulePkg: Fix misuses of AllocateCopyPool

[Jian J Wang <jian.j.wang@intel.com>]

>v3:
> a. Add ASSERT for returned pointer
> b. Correct DestMax parameter in calling StrCpyS
> c. Fix coding style

>v2:
> a. Use ReallocatePool to replace AllocateCopyPool wherever applicable.

AllocateCopyPool(AllocationSize, *Buffer) will copy "AllocationSize" bytes of
memory from old "Buffer" to new allocated one. If "AllocationSize" is bigger
than size of "Buffer", heap memory overflow occurs during copy.

One solution is to allocate pool first then copy the necessary bytes to new
memory. Another is using ReallocatePool instead if old buffer will be freed
on spot.

Cc: Star Zeng <star.zeng@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Bi Dandan <dandan.bi@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Jian J Wang <jian.j.wang@intel.com>
---
 .../Application/UiApp/FrontPageCustomizedUiSupport.c         |  8 ++++++--
 .../BootMaintenanceManagerCustomizedUiSupport.c              |  8 ++++++--
 MdeModulePkg/Library/DeviceManagerUiLib/DeviceManager.c      | 10 +++++-----
 MdeModulePkg/Library/UefiHiiLib/HiiLib.c                     | 12 ++++++++----
 .../Universal/FvSimpleFileSystemDxe/FvSimpleFileSystem.c     |  3 ++-
 MdeModulePkg/Universal/HiiDatabaseDxe/ConfigKeywordHandler.c |  9 ++++++---
 6 files changed, 33 insertions(+), 17 deletions(-)

diff --git a/MdeModulePkg/Application/UiApp/FrontPageCustomizedUiSupport.c b/MdeModulePkg/Application/UiApp/FrontPageCustomizedUiSupport.c
index 1505ef9319..17fc3db507 100644
--- a/MdeModulePkg/Application/UiApp/FrontPageCustomizedUiSupport.c
+++ b/MdeModulePkg/Application/UiApp/FrontPageCustomizedUiSupport.c
@@ -639,9 +639,13 @@ UiListThirdPartyDrivers (
 
     Count++;
     if (Count >= CurrentSize) {
-      DriverListPtr = AllocateCopyPool ((Count + UI_HII_DRIVER_LIST_SIZE) * sizeof (UI_HII_DRIVER_INSTANCE), gHiiDriverList);
+      DriverListPtr = ReallocatePool (
+                        CurrentSize * sizeof (UI_HII_DRIVER_INSTANCE),
+                        (Count + UI_HII_DRIVER_LIST_SIZE)
+                          * sizeof (UI_HII_DRIVER_INSTANCE),
+                        gHiiDriverList
+                        );
       ASSERT (DriverListPtr != NULL);
-      FreePool (gHiiDriverList);
       gHiiDriverList = DriverListPtr;
       CurrentSize += UI_HII_DRIVER_LIST_SIZE;
     }
diff --git a/MdeModulePkg/Library/BootMaintenanceManagerUiLib/BootMaintenanceManagerCustomizedUiSupport.c b/MdeModulePkg/Library/BootMaintenanceManagerUiLib/BootMaintenanceManagerCustomizedUiSupport.c
index b25bc67c06..6dd4fce139 100644
--- a/MdeModulePkg/Library/BootMaintenanceManagerUiLib/BootMaintenanceManagerCustomizedUiSupport.c
+++ b/MdeModulePkg/Library/BootMaintenanceManagerUiLib/BootMaintenanceManagerCustomizedUiSupport.c
@@ -435,9 +435,13 @@ BmmListThirdPartyDrivers (
 
     Count++;
     if (Count >= CurrentSize) {
-      DriverListPtr = AllocateCopyPool ((Count + UI_HII_DRIVER_LIST_SIZE) * sizeof (UI_HII_DRIVER_INSTANCE), gHiiDriverList);
+      DriverListPtr = ReallocatePool (
+                        CurrentSize * sizeof (UI_HII_DRIVER_INSTANCE),
+                        (Count + UI_HII_DRIVER_LIST_SIZE)
+                        * sizeof (UI_HII_DRIVER_INSTANCE),
+                        gHiiDriverList
+                        );
       ASSERT (DriverListPtr != NULL);
-      FreePool (gHiiDriverList);
       gHiiDriverList = DriverListPtr;
       CurrentSize += UI_HII_DRIVER_LIST_SIZE;
     }
diff --git a/MdeModulePkg/Library/DeviceManagerUiLib/DeviceManager.c b/MdeModulePkg/Library/DeviceManagerUiLib/DeviceManager.c
index 23ae6c5392..ac8a975bf6 100644
--- a/MdeModulePkg/Library/DeviceManagerUiLib/DeviceManager.c
+++ b/MdeModulePkg/Library/DeviceManagerUiLib/DeviceManager.c
@@ -240,7 +240,11 @@ AddIdToMacDeviceList (
   } else {
     mMacDeviceList.MaxListLen += MAX_MAC_ADDRESS_NODE_LIST_LEN;
     if (mMacDeviceList.CurListLen != 0) {
-      TempDeviceList = (MENU_INFO_ITEM *)AllocateCopyPool (sizeof (MENU_INFO_ITEM) * mMacDeviceList.MaxListLen, (VOID *)mMacDeviceList.NodeList);
+      TempDeviceList = ReallocatePool (
+                         sizeof (MENU_INFO_ITEM) * mMacDeviceList.CurListLen,
+                         sizeof (MENU_INFO_ITEM) * mMacDeviceList.MaxListLen,
+                         mMacDeviceList.NodeList
+                         );
     } else {
       TempDeviceList = (MENU_INFO_ITEM *)AllocatePool (sizeof (MENU_INFO_ITEM) * mMacDeviceList.MaxListLen);
     }
@@ -251,10 +255,6 @@ AddIdToMacDeviceList (
     TempDeviceList[mMacDeviceList.CurListLen].PromptId = PromptId;  
     TempDeviceList[mMacDeviceList.CurListLen].QuestionId = (EFI_QUESTION_ID) (mMacDeviceList.CurListLen + NETWORK_DEVICE_LIST_KEY_OFFSET);
 
-    if (mMacDeviceList.CurListLen > 0) {
-      FreePool(mMacDeviceList.NodeList);
-    }
-
     mMacDeviceList.NodeList = TempDeviceList;
   }
   mMacDeviceList.CurListLen ++;
diff --git a/MdeModulePkg/Library/UefiHiiLib/HiiLib.c b/MdeModulePkg/Library/UefiHiiLib/HiiLib.c
index ce894c08b5..f9b8c3df27 100644
--- a/MdeModulePkg/Library/UefiHiiLib/HiiLib.c
+++ b/MdeModulePkg/Library/UefiHiiLib/HiiLib.c
@@ -464,20 +464,24 @@ HiiGetFormSetFromHiiHandle(
       }
 
       if (FormSetBuffer != NULL){
-        TempBuffer = AllocateCopyPool (TempSize + ((EFI_IFR_OP_HEADER *) OpCodeData)->Length, FormSetBuffer);
-        FreePool(FormSetBuffer);
-        FormSetBuffer = NULL;
+        TempBuffer = ReallocatePool (
+                       TempSize,
+                       TempSize + ((EFI_IFR_OP_HEADER *) OpCodeData)->Length,
+                       FormSetBuffer
+                       );
         if (TempBuffer == NULL) {
           Status = EFI_OUT_OF_RESOURCES;
           goto Done;
         }
         CopyMem (TempBuffer + TempSize,  OpCodeData, ((EFI_IFR_OP_HEADER *) OpCodeData)->Length);
+        FormSetBuffer = NULL;
       } else {
-        TempBuffer = AllocateCopyPool (TempSize + ((EFI_IFR_OP_HEADER *) OpCodeData)->Length, OpCodeData);
+        TempBuffer = AllocatePool (TempSize + ((EFI_IFR_OP_HEADER *) OpCodeData)->Length);
         if (TempBuffer == NULL) {
           Status = EFI_OUT_OF_RESOURCES;
           goto Done;
         }
+        CopyMem (TempBuffer, OpCodeData, ((EFI_IFR_OP_HEADER *) OpCodeData)->Length);
       }
       TempSize += ((EFI_IFR_OP_HEADER *) OpCodeData)->Length;
       FormSetBuffer = TempBuffer;
diff --git a/MdeModulePkg/Universal/FvSimpleFileSystemDxe/FvSimpleFileSystem.c b/MdeModulePkg/Universal/FvSimpleFileSystemDxe/FvSimpleFileSystem.c
index b81110ff98..e39036aed9 100644
--- a/MdeModulePkg/Universal/FvSimpleFileSystemDxe/FvSimpleFileSystem.c
+++ b/MdeModulePkg/Universal/FvSimpleFileSystemDxe/FvSimpleFileSystem.c
@@ -562,7 +562,8 @@ FvSimpleFileSystemOpen (
       // No, there was no extension. So add one and search again for the file
       // NewFileNameLength = FileNameLength + 1 + 4 = (Number of non-null character) + (file extension) + (a null character)
       NewFileNameLength = FileNameLength + 1 + 4;
-      FileNameWithExtension = AllocateCopyPool (NewFileNameLength * 2, FileName);
+      FileNameWithExtension = AllocatePool (NewFileNameLength * 2);
+      StrCpyS (FileNameWithExtension, NewFileNameLength, FileName);
       StrCatS (FileNameWithExtension, NewFileNameLength, L".EFI");
 
       for (FvFileInfoLink = GetFirstNode (&Instance->FileInfoHead);
diff --git a/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigKeywordHandler.c b/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigKeywordHandler.c
index 1b48c1cebe..5d5f17fb17 100644
--- a/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigKeywordHandler.c
+++ b/MdeModulePkg/Universal/HiiDatabaseDxe/ConfigKeywordHandler.c
@@ -2543,12 +2543,15 @@ MergeToMultiKeywordResp (
 
   MultiKeywordRespLen = (StrLen (*MultiKeywordResp) + 1 + StrLen (*KeywordResp) + 1) * sizeof (CHAR16);
 
-  StringPtr = AllocateCopyPool (MultiKeywordRespLen, *MultiKeywordResp);
+  StringPtr = ReallocatePool (
+                StrSize (*MultiKeywordResp),
+                MultiKeywordRespLen,
+                *MultiKeywordResp
+                );
   if (StringPtr == NULL) {
     return EFI_OUT_OF_RESOURCES;
   }
-  
-  FreePool (*MultiKeywordResp);
+
   *MultiKeywordResp = StringPtr;
 
   StrCatS (StringPtr, MultiKeywordRespLen / sizeof (CHAR16), L"&");
-- 
2.14.1.windows.1