diff options
Diffstat (limited to 'MdeModulePkg/Universal/Variable')
6 files changed, 25 insertions, 1 deletions
diff --git a/MdeModulePkg/Universal/Variable/Pei/Variable.c b/MdeModulePkg/Universal/Variable/Pei/Variable.c index 4c8b9bbc38..5040f8208d 100644 --- a/MdeModulePkg/Universal/Variable/Pei/Variable.c +++ b/MdeModulePkg/Universal/Variable/Pei/Variable.c @@ -361,6 +361,15 @@ GetVariableStore ( PcdGet64 (PcdFlashNvStorageVariableBase64) :
PcdGet32 (PcdFlashNvStorageVariableBase)
);
+
+ //
+ // Check if the Firmware Volume is not corrupted
+ //
+ if ((FvHeader->Signature != EFI_FVH_SIGNATURE) || (!CompareGuid (&gEfiSystemNvDataFvGuid, &FvHeader->FileSystemGuid))) {
+ DEBUG ((EFI_D_ERROR, "Firmware Volume for Variable Store is corrupted\n"));
+ break;
+ }
+
VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINT8 *) FvHeader + FvHeader->HeaderLength);
if (IndexTable != NULL) {
diff --git a/MdeModulePkg/Universal/Variable/Pei/Variable.h b/MdeModulePkg/Universal/Variable/Pei/Variable.h index 292acb974c..e0d8679d63 100644 --- a/MdeModulePkg/Universal/Variable/Pei/Variable.h +++ b/MdeModulePkg/Universal/Variable/Pei/Variable.h @@ -30,6 +30,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. #include <Guid/VariableFormat.h>
#include <Guid/VariableIndexTable.h>
+#include <Guid/SystemNvDataGuid.h>
typedef enum {
VariableStoreTypeHob,
diff --git a/MdeModulePkg/Universal/Variable/Pei/VariablePei.inf b/MdeModulePkg/Universal/Variable/Pei/VariablePei.inf index b86c0d1554..da07cf7b7a 100644 --- a/MdeModulePkg/Universal/Variable/Pei/VariablePei.inf +++ b/MdeModulePkg/Universal/Variable/Pei/VariablePei.inf @@ -48,6 +48,7 @@ [Guids]
gEfiVariableGuid
gEfiVariableIndexTableGuid
+ gEfiSystemNvDataFvGuid
[Ppis]
gEfiPeiReadOnlyVariable2PpiGuid ## SOMETIMES_PRODUCES (Not for boot mode RECOVERY)
diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c index 14d5d9c128..5aa6e3273d 100644 --- a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c +++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.c @@ -1153,7 +1153,7 @@ VariableGetBestLanguage ( **/
VOID
-AutoUpdateLangVariable(
+AutoUpdateLangVariable (
IN CHAR16 *VariableName,
IN VOID *Data,
IN UINTN DataSize
@@ -2463,6 +2463,17 @@ VariableCommonInitialize ( if (TempVariableStoreHeader == 0) {
TempVariableStoreHeader = (EFI_PHYSICAL_ADDRESS) PcdGet32 (PcdFlashNvStorageVariableBase);
}
+
+ //
+ // Check if the Firmware Volume is not corrupted
+ //
+ if ((((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)(TempVariableStoreHeader))->Signature != EFI_FVH_SIGNATURE) ||
+ (!CompareGuid (&gEfiSystemNvDataFvGuid, &((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)(TempVariableStoreHeader))->FileSystemGuid))) {
+ Status = EFI_VOLUME_CORRUPTED;
+ DEBUG ((EFI_D_ERROR, "Firmware Volume for Variable Store is corrupted\n"));
+ goto Done;
+ }
+
VariableStoreBase = TempVariableStoreHeader + \
(((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)(TempVariableStoreHeader)) -> HeaderLength);
VariableStoreLength = (UINT64) PcdGet32 (PcdFlashNvStorageVariableSize) - \
diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h index 22aa5004ca..76c6205978 100644 --- a/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h +++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/Variable.h @@ -37,6 +37,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. #include <Guid/GlobalVariable.h>
#include <Guid/EventGroup.h>
#include <Guid/VariableFormat.h>
+#include <Guid/SystemNvDataGuid.h>
#define VARIABLE_RECLAIM_THRESHOLD (1024)
diff --git a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf index 582baf570e..0acc7ed1b2 100644 --- a/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf +++ b/MdeModulePkg/Universal/Variable/RuntimeDxe/VariableRuntimeDxe.inf @@ -64,6 +64,7 @@ gEfiVariableGuid ## PRODUCES ## Configuration Table Guid
gEfiGlobalVariableGuid ## PRODUCES ## Variable Guid
gEfiEventVirtualAddressChangeGuid ## PRODUCES ## Event
+ gEfiSystemNvDataFvGuid ## CONSUMES
[Pcd]
gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize
|