SB2025123094 - Memory leak in Linux kernel block
Published: December 30, 2025 Updated: December 31, 2025
Security Bulletin ID
SB2025123094
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) Memory leak (CVE-ID: CVE-2023-54209)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the disk_release() function in block/genhd.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/7149e57cf01184fba175589f8fbe9fbf33be02e1
- https://git.kernel.org/stable/c/942e81650b81b4ca62f1d8c61de455c9e7c7e6ca
- https://git.kernel.org/stable/c/aa07e56c6a9c7558165690d14eed4fe8babf34fb
- https://git.kernel.org/stable/c/dd7de3704af9989b780693d51eaea49a665bd9c2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.39
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5