#VU117570 Use-after-free in Linux kernel - CVE-2022-50579
Published: October 23, 2025 / Updated: October 26, 2025
Vulnerability identifier: #VU117570
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-2022-50579
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 ftrace_make_nop() function in arch/arm64/kernel/ftrace.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/0f77b6b2ba70d7c9d69ef39694e283ded9f8b5f2
- https://git.kernel.org/stable/c/657de36c72f57fa172a66b06f826b3f5bc56f42e
- https://git.kernel.org/stable/c/6c93b683cedaef745884cb9d554d02ed6266b897
- https://git.kernel.org/stable/c/8cfb08575c6d4585f1ce0deeb189e5c824776b04
- https://git.kernel.org/stable/c/985432303cf7d4804fb2c2fdfbf0466a796d68c3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.3