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


Tian, Feng <feng.tian@...>
 

Reviewed-by: Feng Tian <feng.tian@intel.com>

Thanks
Feng

-----Original Message-----
From: edk2-devel [mailto:edk2-devel-bounces@lists.01.org] On Behalf Of Liming Gao
Sent: Tuesday, August 2, 2016 1:39 PM
To: edk2-devel@lists.01.org
Subject: [edk2] [Patch] MdeModulePkg LoadFileOnFv2: Fix the potential NULL pointer access

Check NULL pointer before access it.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Liming Gao <liming.gao@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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Liming Gao
 

Check NULL pointer before access it.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Liming Gao <liming.gao@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