CVE-2026-52996

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A resource leak exists in the ksmbd component of the Linux kernel during the durable v2 open process. When the parse durable handle context() function handles a DURABLE REQ V2 request, it uses ksmbd lookup fd cguid() to find a file, which increments the reference count via ksmbd fp get(). If a file is found with a matching CreateGuid but a different ClientGUID, the system fails to release this reference before proceeding to the new-open path. This failure pins entries in the global ft table, preventing the ksmbd close fd() function from executing and disabling the durable scavenger, which results in long-lived resource leaks.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.