SB2026091938 - Memory leak in Linux kernel server mgmt
Published: September 19, 2026
Security Bulletin ID
SB2026091938
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Memory leak (CVE-ID: CVE-2026-90175)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper memory release in the KSMBD authentication and user-configuration handlers when processing KSMBD login requests. A local user can trigger KSMBD login processing to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/1c3ebf832d010c08afe1359215d4121cb1ed2de5
- https://git.kernel.org/stable/c/4d6fe49fa3e7fbd779c761518e6572e340233c9b
- https://git.kernel.org/stable/c/7a98c3b903b10c4d6176948254012b5ca24b071b
- https://git.kernel.org/stable/c/abb5146b2d8197d695ea9eaa0847c73e34f00985
- https://git.kernel.org/stable/c/c9f2872e91b9fe99c1d0ba768906f7aeb48c8517