Branch: refs/heads/master
Home: https://github.com/tianocore/edk2
Commit: 43e2395c1b130540820957305451340e1fff81e4
https://github.com/tianocore/edk2/commit/43e2395c1b130540820957305451340e1fff81e4
Author: Dun Tan <[email protected]>
Date: 2024-07-29 (Mon, 29 Jul 2024)
Changed paths:
M MdeModulePkg/Universal/Variable/Pei/Variable.c
Log Message:
-----------
MdeModulePkg: fix issue caused by uninitialized variable
This patch is to fix issue caused by uninitialized local
variable in Pei/Variable.c.
In the fucntion CalculateHobVariableCacheSize(), the local
variable VARIABLE_STORE_INFO StoreInfo is used without
initialization. When the uninitialized variable is passed
to CalculateAuthVarStorageSize() and GetNextVariablePtr(),
the field StoreInfo->FtwLastWriteData might be a uninitialized
non-zero value. Then the code execution will access the
invalid address StoreInfo->FtwLastWriteData->TargetAddress.
This might cause issue.
So in this commit, the local variable VARIABLE_STORE_INFO
StoreInfo is initialized by a ZeroMem() before use.
Signed-off-by: Dun Tan <[email protected]>
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