#VU113284 Improper locking in Linux kernel - CVE-2025-38393

Vulnerability identifier: #VU113284

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-2025-38393

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 nfs_layoutget_begin() function in fs/nfs/pnfs.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/08287df60bac5b008b6bcdb03053988335d3d282
https://git.kernel.org/stable/c/1f4da20080718f258e189a2c5f515385fa393da6
https://git.kernel.org/stable/c/864a54c1243ed3ca60baa4bc492dede1361f4c83
https://git.kernel.org/stable/c/8846fd02c98da8b79e6343a20e6071be6f372180
https://git.kernel.org/stable/c/8ca65fa71024a1767a59ffbc6a6e2278af84735e
https://git.kernel.org/stable/c/c01776287414ca43412d1319d2877cbad65444ac
https://git.kernel.org/stable/c/e4b13885e7ef1e64e45268feef1e5f0707c47e72

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?