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[TCPIP] Check for allocation failures in ReadIpConfiguration. CID 1411924

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This commit is contained in:
Thomas Faber
2018-01-08 13:51:04 +01:00
parent 63a3a2cbb8
commit d87786bf6c
1 changed files with 36 additions and 30 deletions
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66
drivers/network/tcpip/datalink/lan.c
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@@ -637,14 +637,16 @@ BOOLEAN ReadIpConfiguration(PIP_INTERFACE Interface)
if (NT_SUCCESS(Status))
{
RegistryDataU.Length = KeyValueInfo->DataLength;
RtlUnicodeStringToAnsiString(&RegistryDataA,
&RegistryDataU,
TRUE);
AddrInitIPv4(&Interface->Unicast, inet_addr(RegistryDataA.Buffer));
RtlFreeAnsiString(&RegistryDataA);
Status = RtlUnicodeStringToAnsiString(&RegistryDataA,
&RegistryDataU,
TRUE);
if (NT_SUCCESS(Status))
{
AddrInitIPv4(&Interface->Unicast,
inet_addr(RegistryDataA.Buffer));
RtlFreeAnsiString(&RegistryDataA);
}
}
Status = ZwQueryValueKey(ParameterHandle,
@@ -656,16 +658,18 @@ BOOLEAN ReadIpConfiguration(PIP_INTERFACE Interface)
if (NT_SUCCESS(Status))
{
RegistryDataU.Length = KeyValueInfo->DataLength;
RtlUnicodeStringToAnsiString(&RegistryDataA,
&RegistryDataU,
TRUE);
AddrInitIPv4(&Interface->Netmask, inet_addr(RegistryDataA.Buffer));
RtlFreeAnsiString(&RegistryDataA);
Status = RtlUnicodeStringToAnsiString(&RegistryDataA,
&RegistryDataU,
TRUE);
if (NT_SUCCESS(Status))
{
AddrInitIPv4(&Interface->Netmask,
inet_addr(RegistryDataA.Buffer));
RtlFreeAnsiString(&RegistryDataA);
}
}
/* We have to wait until both IP address and subnet mask
* are read to add the interface route, but we must do it
* before we add the default gateway */
@@ -683,24 +687,26 @@ BOOLEAN ReadIpConfiguration(PIP_INTERFACE Interface)
if (NT_SUCCESS(Status))
{
RegistryDataU.Length = KeyValueInfo->DataLength;
RtlUnicodeStringToAnsiString(&RegistryDataA,
&RegistryDataU,
TRUE);
AddrInitIPv4(&Router, inet_addr(RegistryDataA.Buffer));
if (!AddrIsUnspecified(&Router))
RouterCreateRoute(&DefaultMask, &DefaultMask, &Router, Interface, 1);
RtlFreeAnsiString(&RegistryDataA);
Status = RtlUnicodeStringToAnsiString(&RegistryDataA,
&RegistryDataU,
TRUE);
if (NT_SUCCESS(Status))
{
AddrInitIPv4(&Router, inet_addr(RegistryDataA.Buffer));
if (!AddrIsUnspecified(&Router))
RouterCreateRoute(&DefaultMask, &DefaultMask, &Router, Interface, 1);
RtlFreeAnsiString(&RegistryDataA);
}
}
}
ExFreePoolWithTag(KeyValueInfo, KEY_VALUE_TAG);
ZwClose(ParameterHandle);
}
return TRUE;
}