#VU108316 Improper locking in Linux kernel - CVE-2025-37791

Vulnerability identifier: #VU108316

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-2025-37791

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 ethtool_cmis_module_poll() function in net/ethtool/cmis_cdb.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.12, 6.12.1, 6.12.2, 6.12.3, 6.12.4, 6.12.5, 6.12.6, 6.12.7, 6.12.8, 6.12.9, 6.12.10, 6.12.11, 6.12.12, 6.12.13, 6.12.14, 6.12.15, 6.12.16, 6.12.17, 6.12.18, 6.12.19, 6.12.20, 6.12.21, 6.12.22, 6.12.23, 6.12.24, 6.14, 6.14.1, 6.14.2, 6.14.3

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External links
https://git.kernel.org/stable/c/61765e1b417a23371c3735e3cddf4ad9354ed2e9
https://git.kernel.org/stable/c/7eb0a0072f966bb0b01d8b7d529d9743a7187bd1
https://git.kernel.org/stable/c/f3fdd4fba16c74697d8bc730b82fb7c1eff7fab3
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.25
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14.4

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.