SB20251230263 - Improper locking in Linux kernel powerpc kernel
Published: December 30, 2025 Updated: December 30, 2025
Security Bulletin ID
SB20251230263
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-2022-50870)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the rtas_halt(), rtas_os_term() and rtas_initialize() functions in arch/powerpc/kernel/rtas.c. 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/06a07fbb32b3a23eec20a42b1e64474da0a3b33e
- https://git.kernel.org/stable/c/464d10e8d797454e16a173ef1292a446b2adf21c
- https://git.kernel.org/stable/c/698e682c849e356fb47a8be47ca8baa817cf31e0
- https://git.kernel.org/stable/c/c2fa91abf22a705cf02f886cd99cff41f4ceda60
- https://git.kernel.org/stable/c/d8939315b7342860df143afe0adda6212cdd3193
- https://git.kernel.org/stable/c/e23822c7381c59d9e42e65771b6e17c71ed30ea7
- https://git.kernel.org/stable/c/ed2213bfb192ab51f09f12e9b49b5d482c6493f3
- https://git.kernel.org/stable/c/f2167f10fcca68ab9ae3f8d94d2c704c5541ac69
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.163