Resource management error in Linux kernel - CVE-2025-21771
Published: February 27, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU105076
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2025-21771
CWE-ID: CWE-399
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to resource management error within the ops_sanitize_err() function in kernel/sched/ext.c, within the sched_change_group(), sched_move_task() and cpu_cgroup_attach() functions in kernel/sched/core.c, within the sched_autogroup_exit_task() and autogroup_move_group() functions in kernel/sched/autogroup.c. A local user can perform a denial of service (DoS) attack.
Affected software
Linux kernel
How to mitigate CVE-2025-21771
Install update from vendor's website.
Linux kernel - update to 6.13.4