The monthly security patches released by Microsoft on March 12th, 2019 fixed two Windows zero-days being abused in the wild. CVE-2019-0808 was one of them which was discovered by Google’s Threat Analysis Team and submitted to Microsoft. According to Microsoft, this vulnerability affecting Win32k components allows attackers to elevate privileges and execute arbitrary code in kernel mode.

http://blogs.360.cn/post/RootCause_CVE-2019-0808_EN.html