NTSTATUS DriverAddDevice (PDRIVER_OBJECT driverObject, PDEVICE_OBJECT pdo)
{
#if defined(DEBUG) || defined (DEBUG_TRACE)
	char nameInfoBuffer[128];
	POBJECT_NAME_INFORMATION nameInfo = (POBJECT_NAME_INFORMATION) nameInfoBuffer;
	ULONG nameInfoSize;
	Dump ("AddDevice pdo=%p type=%x name=%ws\n", pdo, pdo->DeviceType, NT_SUCCESS (ObQueryNameString (pdo, nameInfo, sizeof (nameInfoBuffer), &nameInfoSize)) ? nameInfo->Name.Buffer : L"?");
#endif

	if (VolumeClassFilterRegistered && BootArgsValid && BootArgs.HiddenSystemPartitionStart != 0)
	{
		PWSTR interfaceLinks = NULL;
		if (NT_SUCCESS (IoGetDeviceInterfaces (&GUID_DEVINTERFACE_VOLUME, pdo, DEVICE_INTERFACE_INCLUDE_NONACTIVE, &interfaceLinks)) && interfaceLinks)
		{
			if (interfaceLinks[0] != UNICODE_NULL)
			{
				Dump ("Volume pdo=%p interface=%ws\n", pdo, interfaceLinks);
				ExFreePool (interfaceLinks);

				return VolumeFilterAddDevice (driverObject, pdo);
			}

			ExFreePool (interfaceLinks);
		}
	}

	return DriveFilterAddDevice (driverObject, pdo);
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.