Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-99279
Published: November 8, 2026
Vulnerability identifier: #VU161897
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-99279
CWE-ID: CWE-772
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service by exhausting memory and connection slots.
The vulnerability exists due to failure to release ended session resources in the Linux kernel ksmbd session management component when handling logoff and previous-session replacement. A remote user can establish and end sessions without sending further session setup requests on the owning connections, leaving expired sessions allocated to exhaust server resources.
Affected software
Linux kernel
How to mitigate CVE-2026-99279
Install security update from vendor's repository.