#VU112265 Input validation error in Linux kernel - CVE-2025-38169

Vulnerability identifier: #VU112265

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-2025-38169

CWE-ID: CWE-20

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 input validation within the fpsimd_thread_switch() function in arch/arm64/kernel/fpsimd.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/01098d893fa8a6edb2b56e178b798e3e6b674f02
https://git.kernel.org/stable/c/55d52af498daea75aa03ba9b7e444c8ae495ac20
https://git.kernel.org/stable/c/a305821f597ec943849d3e53924adb88c61ed682

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?