#VU120415 Use-after-free in Linux kernel - CVE-2023-54019
Published: December 26, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120415
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-54019
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the update_triggers(), psi_show(), psi_trigger_create(), psi_trigger_destroy(), psi_trigger_poll() and psi_write() functions in kernel/sched/psi.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's repository.