#VU104659 Improper locking in Linux kernel - CVE-2022-49440
Published: February 26, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU104659
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-2022-49440
CWE-ID: CWE-667
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 improper locking within the enter_rtas() function in arch/powerpc/kernel/rtas.c, within the _GLOBAL() function in arch/powerpc/kernel/entry_64.S. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/5ca40fcf0da0ce2b5bc44e7d8b036535955f2e3d
- https://git.kernel.org/stable/c/5f4367448f6817c8a0e94dc9736ed84fa8eee4a3
- https://git.kernel.org/stable/c/b6b1c3ce06ca438eb24e0f45bf0e63ecad0369f5
- https://git.kernel.org/stable/c/c9c41f0273826a13ac93124e66a4ff45df281ba0
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.3