diff options
| -rw-r--r-- | MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Impl.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Impl.c b/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Impl.c index aad6674..9e496ef 100644 --- a/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Impl.c +++ b/MdeModulePkg/Universal/Network/Dhcp4Dxe/Dhcp4Impl.c @@ -1,7 +1,7 @@ /** @file
This file implement the EFI_DHCP4_PROTOCOL interface.
-Copyright (c) 2006 - 2017, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -1186,8 +1186,10 @@ EfiDhcp4Build ( @param[in] UdpIo The UdpIo being created.
@param[in] Context Dhcp4 instance.
- @retval EFI_SUCCESS UdpIo is configured successfully.
- @retval other Other error occurs.
+ @retval EFI_SUCCESS UdpIo is configured successfully.
+ @retval EFI_INVALID_PARAMETER Class E IP address is not supported or other parameters
+ are not valid.
+ @retval other Other error occurs.
**/
EFI_STATUS
EFIAPI
@@ -1229,7 +1231,14 @@ Dhcp4InstanceConfigUdpIo ( // compute it according to the classful addressing rule.
//
Class = NetGetIpClass (ClientAddr);
+ //
+ // Class E IP address is not supported here!
+ //
ASSERT (Class < IP4_ADDR_CLASSE);
+ if (Class >= IP4_ADDR_CLASSE) {
+ return EFI_INVALID_PARAMETER;
+ }
+
SubnetMask = gIp4AllMasks[Class << 3];
} else {
SubnetMask = DhcpSb->Netmask;
|