CyberRota Analysis
AI-GeneratedThe vulnerability in the Linux kernel affects the ksmbd component, specifically in how it handles session logoff for SMB3 multichannel connections. If exploited, this flaw could lead to improper session management, potentially allowing unauthorized access or denial of service during session teardown. Organizations using Linux systems with SMB3 multichannel capabilities should prioritize addressing this issue to ensure secure session handling and maintain system integrity.
Original NVD Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: safely drain sessions during logoff SMB3 multichannel allows requests for one session to run on multiple connections. Wait for all channels bound to a session before freeing shared session objects. A deferred byte-range lock remains counted as a running request and only wakes when its file closes. Wake blocked locks during the drain without unpublishing or modifying their file objects. Synchronous CANCEL requests must invoke their cancellation callback to wake pending operations, while CHANGE_NOTIFY completion remains specific to the asynchronous path. Serialize session teardown with channel registration and previous-session cleanup, and use atomic work-state transitions so LOGOFF, CANCEL, and connection teardown invoke cancellation callbacks only once.
Related CVEs
Other vulnerabilities affecting the same vendor(s)