This blog post is an in-depth look at an interesting logic bug class in the Windows Kernel and what I did to try to get it fixed with our partners at Microsoft. The maximum impact of the bug class is local privilege escalation if kernel and driver developers don’t take into account how the IO manager operates when accessing device objects.

https://googleprojectzero.blogspot.com/2019/03/windows-kernel-logic-bug-class-access.html