Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=746

The attached PoC triggers a blue screen on Windows 7 with special pool enabled on win32k.sys . A reference to the bitmap object still exists in the device context after it has been deleted.


Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39959.zip