SB2026091959 - Memory leak in Linux kernel server mgmt
Published: September 19, 2026
Security Bulletin ID
SB2026091959
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote 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-2026-90152)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a memory leak in ksmbd_session_register() when registering an SMB session and xa_store() fails. A remote attacker can initiate SMB session setup requests that result in failed session registration to cause a denial of service.
Remediation
Install update from vendor's website.