Microsoft Windows Kernel - 'bGetRealizedBrush' Use-After-Free (MS15-097)

Author: Nils Sommer
type: dos
platform: windows_x86
port: 
date_added: 2015-09-22 
date_updated: 2015-09-22 
verified: 1 
codes: CVE-2015-2518;MS15-097 
tags: 
aliases:  
screenshot_url:  
application_url: 

Source: https://code.google.com/p/google-security-research/issues/detail?id=458

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The attached testcase crashes Win 7 with Special Pool on win32k while accessing freed memory in bGetRealizedBrush.
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Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/38277.zip