win32k Desktop and Clipboard - Null Pointer Dereference

Source: https://code.google.com/p/google-security-research/issues/detail?id=534

The attached PoC triggers a null pointer condition on Windows 7 32-bit, which can potentially be exploited on versions of Windows that allow mapping the null page (e.g. Windows 7 32-bit).
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Note that multiple PoC executions and simulated system activity (such as opening Explorer) may be required to trigger this issue.


Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39026.zip