SB2025102356 - Improper locking in Linux kernel time
Published: October 23, 2025 Updated: October 26, 2025
Security Bulletin ID
SB2025102356
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-2023-53728)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the posix_timer_by_id() function in kernel/time/posix-timers.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/322377cc909defcca9451487484845e7e1d20d1b
- https://git.kernel.org/stable/c/37175e25edf7cc0d5a2cd2c2a1cbe2dcbf4a1937
- https://git.kernel.org/stable/c/6a0ac84501b4fec73a1a823c55cf13584c43f418
- https://git.kernel.org/stable/c/8ad6679a5bb97cdb3e14942729292b4bfcc0e223
- https://git.kernel.org/stable/c/8ce8849dd1e78dadcee0ec9acbd259d239b7069f
- https://git.kernel.org/stable/c/8dc52c200b889bc1cb34288fbf623d4ff381d2ae
- https://git.kernel.org/stable/c/9ea26a8494a0a9337e7415eafd6f3ed940327dc5
- https://git.kernel.org/stable/c/ef535e0315afd098c4beb1da364847eca4b56a20
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.150