CVE-2022-40732 Null dereference in Windows
An unprivileged user can trigger a system reboot via a null pointer dereference in the Windows DirectComposition driver.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2022-40732?
CVE-2022-40732 is a medium-severity vulnerability in Microsoft Windows 11 21h2, published on 18 Dec 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
An access violation vulnerability exists in the DirectComposition functionality win32kbase.sys driver version 10.0.22000.593 as part of Windows 11 version 22000.593 and version 10.0.20348.643 as part of Windows Server 2022 version 20348.643. A specially-crafted set of syscalls can lead to a reboot. An unprivileged user can run specially-crafted code to trigger Denial Of Service.
Weakness: CWE-476
Which versions are affected by CVE-2022-40732?
It affects 2 products.
Products include Microsoft Windows 11 21h2, Microsoft Windows Server 2022.
How do I fix CVE-2022-40732?
No fix has been published for CVE-2022-40732 yet. Limit exposure of the affected software until one is available.
Is CVE-2022-40732 being exploited?
There is no known exploitation of CVE-2022-40732 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 11 21h2
- CVE-2024-38080 Microsoft Windows Hyper-V Privilege Escalation
- CVE-2023-23392 HTTP Protocol Stack Remote Code Execution Vulnerability
- CVE-2024-43533 Remote Desktop Client Remote Code Execution Vulnerability
- CVE-2024-38259 Microsoft Management Console Remote Code Execution Vulnerability
- CVE-2023-38146 Windows Themes Remote Code Execution Vulnerability
Sources
Also known as GHSA-h9ph-92gj-fqqg.