SB20250226477 - Improper locking in Linux kernel powerpc kernel
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226477
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper locking (CVE-ID: CVE-2022-49440)
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.
References
- 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