#VU112238 Improper locking in Linux kernel - CVE-2025-38165

Vulnerability identifier: #VU112238

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-2025-38165

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 sk_psock_skb_ingress_enqueue(), sk_psock_skb_ingress(), sk_psock_skb_ingress_self() and sk_psock_verdict_apply() functions in net/core/skmsg.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/3d25fa2d7f127348c818e1dab9e58534f7ac56cc
https://git.kernel.org/stable/c/5ca2e29f6834c64c0e5a9ccf1278c21fb49b827e
https://git.kernel.org/stable/c/9718ba6490732dbe70190d42c21deb1440834402
https://git.kernel.org/stable/c/db1d15a26f21f97459508c42ae87cabe8d3afc3b
https://git.kernel.org/stable/c/e9c1299d813fc04668042690f2c3cc76d013959a

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?