add condition judgment to avoid accessing NULL address if not found existing variable.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9038 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 4 insertions, 2 deletions

diff --git a/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariable.c b/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariable.c
index dddc143751..228d7d8cff 100644
--- a/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariable.c
+++ b/MdeModulePkg/Universal/Variable/EmuRuntimeDxe/EmuVariable.c
@@ -618,7 +618,7 @@ UpdateVariable (
   UINTN                   VarDataOffset;

   UINTN                   VarSize;

   VARIABLE_GLOBAL         *Global;

-  UINTN                               NonVolatileVarableStoreSize;

+  UINTN                   NonVolatileVarableStoreSize;

 

   Global = &mVariableModuleGlobal->VariableGlobal[Physical];

 

@@ -767,7 +767,9 @@ UpdateVariable (
   //

   // Mark the old variable as deleted

   //

-  Variable->CurrPtr->State &= VAR_DELETED;

+  if (Variable->CurrPtr != NULL) {

+    Variable->CurrPtr->State &= VAR_DELETED;

+  }

 

   UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile, FALSE, TRUE, FALSE, FALSE);