Resource management error in Linux kernel



| Updated: 2025-05-11
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2025-21816
CWE-ID CWE-399
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Resource management error

EUVDB-ID: #VU105157

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-2025-21816

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

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 HRTIMER_ACTIVE_SOFT(), DEFINE_PER_CPU(), hrtimer_base_is_online(), lock_hrtimer_base(), raw_spin_unlock(), WRITE_ONCE(), hrtimer_is_hres_enabled() and __hrtimer_start_range_ns() functions in kernel/time/hrtimer.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 - 6.12.13

CPE2.3 External links

https://git.kernel.org/stable/c/2aecec58e9040ce3d2694707889f9914a2374955
https://git.kernel.org/stable/c/53dac345395c0d2493cbc2f4c85fe38aef5b63f5
https://git.kernel.org/stable/c/e456a88bddae4030ba962447bb84be6669f2a0c1
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.14


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.



###SIDEBAR###