#VU108320 Improper locking in Linux kernel - CVE-2025-23161

Vulnerability identifier: #VU108320

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-2025-23161

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 vmd_pci_read(), vmd_pci_write() and vmd_probe() functions in drivers/pci/controller/vmd.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.1 - 6.1.134

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External links
https://git.kernel.org/stable/c/13e5148f70e81991acbe0bab5b1b50ba699116e7
https://git.kernel.org/stable/c/18056a48669a040bef491e63b25896561ee14d90
https://git.kernel.org/stable/c/20d0a9062c031068fa39f725a32f182b709b5525
https://git.kernel.org/stable/c/2358046ead696ca5c7c628d6c0e2c6792619a3e5
https://git.kernel.org/stable/c/5c3cfcf0b4bf43530788b08a8eaf7896ec567484
https://git.kernel.org/stable/c/c250262d6485ca333e9821f85b07eb383ec546b1
https://git.kernel.org/stable/c/c2968c812339593ac6e2bdd5cc3adabe3f05fa53
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.135

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?