SB20250226546 - Improper locking in Linux kernel ubifs
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226546
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-2021-47637)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the do_rename() function in fs/ubifs/dir.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/37bdf1ad592555ecda1d55b89f6e393e4c0589d1
- https://git.kernel.org/stable/c/70e9090acc32348cedc5def0cd6d5c126efc97b9
- https://git.kernel.org/stable/c/83e42a78428fc354f5e2049935b84c8d8d29b787
- https://git.kernel.org/stable/c/8b278c8dcfb565cb65eceb62a38cbf7a7c326db5
- https://git.kernel.org/stable/c/9dddc8211430fb851ddf0b168e3a00c6f66cc185
- https://git.kernel.org/stable/c/afd427048047e8efdedab30e8888044e2be5aa9c
- https://git.kernel.org/stable/c/c58af8564a7b08757173009030b74baf4b2b762b
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.33