#VU112797 Improper locking in Linux kernel - CVE-2025-38282

Vulnerability identifier: #VU112797

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-2025-38282

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 kernfs_should_drain_open_files() function in fs/kernfs/file.c, within the kernfs_break_active_protection() function in fs/kernfs/dir.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/071d8e4c2a3b0999a9b822e2eb8854784a350f8a
https://git.kernel.org/stable/c/2d6a67c2b3b87808a347dc1047b520a9dd177a4f
https://git.kernel.org/stable/c/6bfb154f95d5f0ab7ed056f23aba8c1a94cb3927
https://git.kernel.org/stable/c/6c81f1c7812c61f187bed1b938f1d2e391d503ab
https://git.kernel.org/stable/c/72275c888f8962b406ee9c6885c79bf68cca5a63

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?