SB2024061318 - Improper locking in Linux kernel powerpc kernel
Published: June 13, 2024 Updated: May 13, 2025
Security Bulletin ID
SB2024061318
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-2021-47454)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the __cpu_die() function in arch/powerpc/kernel/smp.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/53770a411559cf7bc0906d1df319cc533d2f4f58
- https://git.kernel.org/stable/c/3ea0b497a7a2fff6a4b7090310c9f52c91975934
- https://git.kernel.org/stable/c/787252a10d9422f3058df9a4821f389e5326c440
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.76
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15