17 year old windows Flaw, still a serious vulnerability

Google researchers discovered a serious security flaw in the windows NT kernel, that allows a hacker to execute malicious code on the victims computer in the kernel mode.This flaw affects all windows Nt based Operating systems, including win NT 3.1 to win7.
Microsoft also issued an advisory regarding this flaw, But also noted that this flaw does NOT affect Windows OS for x64 based architectures such as the Itanium-based computers.

A possible workaround to this situation is to turn of/disable MSDOS & WOWEXEC subsystems of the OS to prevent further attacks & this can be done from GROUP POLICY Editor in windows