An elevation of privilege vulnerability exists in the way that ws2ifsl.sys (Winsock) handles objects in memory, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-1253, CVE-2019-1278, CVE-2019-1303.
https://www.tenable.com/blog/microsofts-september-2019-patch-tuesday-tenable-roundup
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1215