[edk2-devel] [PATCH EDK2 v1 1/1] NetworkPkg/Ip4Dxe:Null-checking before dereference
wenyi,xie via groups.io
xiewenyi2=huawei.com at groups.io
Sun Jan 29 01:14:24 UTC 2023
Null-checking first before a pointer is dereferenced.
Cc: Maciej Rabeda <maciej.rabeda at linux.intel.com>
Cc: Siyuan Fu <siyuan.fu at intel.com>
Signed-off-by: Wenyi Xie <xiewenyi2 at huawei.com>
---
NetworkPkg/Ip4Dxe/Ip4Config2Nv.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/NetworkPkg/Ip4Dxe/Ip4Config2Nv.c b/NetworkPkg/Ip4Dxe/Ip4Config2Nv.c
index e0b6a4d4a92f..b96e11bdabba 100644
--- a/NetworkPkg/Ip4Dxe/Ip4Config2Nv.c
+++ b/NetworkPkg/Ip4Dxe/Ip4Config2Nv.c
@@ -397,16 +397,16 @@ Ip4Config2ConvertConfigNvDataToIfrNvData (
UINTN DnsCount;
EFI_IPv4_ADDRESS *DnsAddress;
+ if ((IfrNvData == NULL) || (Instance == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
Status = EFI_SUCCESS;
Ip4Config2 = &Instance->Ip4Config2;
Ip4Info = NULL;
DnsAddress = NULL;
GatewaySize = sizeof (EFI_IPv4_ADDRESS);
- if ((IfrNvData == NULL) || (Instance == NULL)) {
- return EFI_INVALID_PARAMETER;
- }
-
NET_CHECK_SIGNATURE (Instance, IP4_CONFIG2_INSTANCE_SIGNATURE);
IpSb = IP4_SERVICE_FROM_IP4_CONFIG2_INSTANCE (Instance);
@@ -571,6 +571,10 @@ Ip4Config2ConvertIfrNvDataToConfigNvData (
UINTN DataSize;
EFI_INPUT_KEY Key;
+ if ((Instance == NULL) || (IfrFormNvData == NULL)) {
+ return EFI_INVALID_PARAMETER;
+ }
+
Status = EFI_SUCCESS;
Ip4Cfg2 = &Instance->Ip4Config2;
Ip4NvData = &Instance->Ip4NvData;
@@ -581,10 +585,6 @@ Ip4Config2ConvertIfrNvDataToConfigNvData (
TimeoutEvent = NULL;
SetAddressEvent = NULL;
- if ((Instance == NULL) || (IfrFormNvData == NULL)) {
- return EFI_INVALID_PARAMETER;
- }
-
if (IfrFormNvData->Configure != TRUE) {
return EFI_SUCCESS;
}
--
2.20.1.windows.1
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