#VU91502 Improper locking in Linux kernel - CVE-2024-36944

Vulnerability identifier: #VU91502

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-36944

CWE-ID: CWE-667

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper locking within the qxl_fence_wait() function in drivers/gpu/drm/qxl/qxl_release.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/4a89ac4b0921c4ea21eb1b4cf3a469a91bacfcea
https://git.kernel.org/stable/c/b548c53bc3ab83dc6fc86c8e840f013b2032267a
https://git.kernel.org/stable/c/148ed8b4d64f94ab079c8f0d88c3f444db97ba97
https://git.kernel.org/stable/c/3dfe35d8683daf9ba69278643efbabe40000bbf6
https://git.kernel.org/stable/c/3628e0383dd349f02f882e612ab6184e4bb3dc10

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.