CVE-2026-89692

A flaw was found in the Linux kernel's Network File System NFS daemon, nfsd. This vulnerability occurs when a delegation recall operation fails, leaving a critical internal flag uncleared. This prevents subsequent attempts to break the same delegation, leading to a denial of service where file...

PT-2026-90408

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 7.2.6-1.1 Description An issue exists in the nfsd component where the nfsd break one deleg function sets the NFSD4 CALLBACK RUNNING bit to serialize recall work before calling nfsd4 run cb to queue the recall. If...

CVE-2026-74686

This vulnerability affects the Linux kernel 's rqspinlock (queued read-copy spinlock) implementation. When an ABBA deadlock is detected, the waiter queue's tail is not reset, causing the detecting CPU to wait indefinitely for a next waiter that may never arrive. This leads to intermittent stalls ...