Xen Windows PV drivers

• CVE-2025-27464 Critical 9.4 WinPVDrivers: Excessive permissions on user-exposed devices 0.2%
• CVE-2025-27463 Critical 9.4 WinPVDrivers: Excessive permissions on user-exposed devices 0.2%
• CVE-2025-27462 Critical 9.4 WinPVDrivers: Excessive permissions on user-exposed devices 0.2%