diff options
| -rw-r--r-- | MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c index 3c29f75f88..a843150f46 100644 --- a/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c +++ b/MdeModulePkg/Universal/Network/Ip4Dxe/Ip4If.c @@ -581,9 +581,10 @@ Ip4SetAddress ( Interface->SubnetBrdcast = (IpAddr | ~SubnetMask);
Type = NetGetIpClass (IpAddr);
+ ASSERT (Type <= IP4_ADDR_CLASSC);
Len = NetGetMaskLength (SubnetMask);
- ASSERT (Len >= 1);
- Netmask = gIp4AllMasks[MIN ((Len - 1), Type << 3)];
+ ASSERT (Len < IP4_MASK_NUM);
+ Netmask = gIp4AllMasks[MIN (Len, Type << 3)];
Interface->NetBrdcast = (IpAddr | ~Netmask);
//
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