#VU120422 Out-of-bounds read in Linux kernel - CVE-2023-54139
Published: December 26, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120422
Vulnerability risk: Low
CVSSv4.0: 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-2023-54139
CWE-ID: CWE-125
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 perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the TEST_F() function in tools/testing/selftests/user_events/ftrace_test.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/0489c2b2c3104b89f078dbcec8c744dfc157d3e9
- https://git.kernel.org/stable/c/4fe46b5adf18e3dc606e62c9e6a0413398a17572
- https://git.kernel.org/stable/c/cd98c93286a30cc4588dfd02453bec63c2f4acf4
- https://git.kernel.org/stable/c/fa7f2f5d1739452280c22727c4384a52b72ab5de
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2