[edk2] [Patch] MdeModulePkg LoadFileOnFv2: Fix the potential NULL pointer access

[Liming Gao]

Check NULL pointer before access it.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Liming Gao <liming....@intel.com>
---
 MdeModulePkg/Universal/LoadFileOnFv2/LoadFileOnFv2.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/MdeModulePkg/Universal/LoadFileOnFv2/LoadFileOnFv2.c 
b/MdeModulePkg/Universal/LoadFileOnFv2/LoadFileOnFv2.c
index 9eea50d..18a07d8 100644
--- a/MdeModulePkg/Universal/LoadFileOnFv2/LoadFileOnFv2.c
+++ b/MdeModulePkg/Universal/LoadFileOnFv2/LoadFileOnFv2.c
@@ -345,6 +345,9 @@ FvNotificationEvent (
   Index      = 0;
   BufferSize = sizeof (EFI_HANDLE);
   Handle     = AllocateZeroPool (BufferSize);
+  if (Handle == NULL) {
+    return;
+  }
   Status = gBS->LocateHandle (
                     ByProtocol,
                     &gEfiFirmwareVolume2ProtocolGuid,
@@ -355,6 +358,9 @@ FvNotificationEvent (
   if (EFI_BUFFER_TOO_SMALL == Status) {
     FreePool (Handle);
     Handle = AllocateZeroPool (BufferSize);
+    if (Handle == NULL) {
+      return;
+    }
     Status = gBS->LocateHandle (
                     ByProtocol,
                     &gEfiFirmwareVolume2ProtocolGuid,
-- 
2.8.0.windows.1

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