SB2025091643 - Memory leak in Linux kernel smb client
Published: September 16, 2025 Updated: September 22, 2025
Security Bulletin ID
SB2025091643
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-2023-53230)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the cifs_smb3_do_mount() function in fs/smb/client/cifsfs.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/12c30f33cc6769bf411088a2872843c4f9ea32f9
- https://git.kernel.org/stable/c/945f4a7aff84fde1f825d17a5050880345da3228
- https://git.kernel.org/stable/c/9850867042674361f455ea8901375cff5b800be5
- https://git.kernel.org/stable/c/eb79f8dfba343667f9a82a252743f4e8f67ce420
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.12