An elevation of privilege vulnerability exists in the way that the Windows Kernel handles objects in memory, aka "Windows Kernel Elevation of Privilege Vulnerability." This affects Windows Server 2012 R2, Windows RT 8.1, Windows Server 2016, Windows 8.1, Windows 10, Windows 10 Servers.
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8455