SB2025100443 - Memory leak in Linux kernel cifs
Published: October 4, 2025 Updated: October 27, 2025
Security Bulletin ID
SB2025100443
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-2023-53593)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the cifs_readpage_worker() function in fs/cifs/file.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/4259dd534245579c966c53c15187cc8e9461d6e9
- https://git.kernel.org/stable/c/5a87735675147f848445f05fd1f06168188f91af
- https://git.kernel.org/stable/c/69513dd669e243928f7450893190915a88f84a2b
- https://git.kernel.org/stable/c/6e74926ede96470be84e66a1c576982fe4f8ea79
- https://git.kernel.org/stable/c/7a9fb689c1a1dc373887621a3bfa3810df0abde4
- https://git.kernel.org/stable/c/961f7ce16223aee2db583a43877d84e6d1f2b857
- https://git.kernel.org/stable/c/9e725386d4262ef23ae51993f04602bc535b5be2
- https://git.kernel.org/stable/c/c3ac8323f2f5b50e32681c254b8318f7fa2dc3f4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.324