Race condition in Linux kernel - CVE-2026-90154
Published: September 19, 2026
Vulnerability identifier: #VU151329
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90154
CWE-ID: CWE-362
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper connection-to-session association in ksmbd_all_conn_set_status when processing SMB session logoff or session replacement operations. A remote user can initiate a session logoff or session replacement to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-90154
Install security update from vendor's repository.