#VU105426 Resource management error in Linux kernel - CVE-2025-21834

Vulnerability identifier: #VU105426

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-2025-21834

CWE-ID: CWE-399

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 resource management error within the seccomp_is_const_allow() and seccomp_log() functions in kernel/seccomp.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/5a262628f4cf2437d863fe41f9d427177b87664c
https://git.kernel.org/stable/c/cf6cb56ef24410fb5308f9655087f1eddf4452e6
https://git.kernel.org/stable/c/fa80018aa5be10c35e9fa896b7b4061a8dce3eed

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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.