DEBIAN-CVE-2026-89990

In the Linux kernel, the following vulnerability has been resolved: ceph: lock mutex in cephmdscheckaccess MDS session OPEN handling replaces mdsc-scapauths under mdsc-mutex, freeing the previous array and its strings. cephmdscheckaccess traverses this array without holding the mutex. A concurren...

Linux Distros Unpatched Vulnerability : CVE-2026-89648

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ceph: cap delegated inode count in cephparsedeleginos cephparsedeleginos decodes interval sets of delegated inode numbers from an MDS create-with-delegation...

CVE-2026-89654 ceph: fix UAF in check_new_map() on session freed during unlock

In the Linux kernel, the following vulnerability has been resolved: ceph: fix UAF in checknewmap on session freed during unlock checknewmap iterates mdsc-sessions and for each active session drops mdsc-mutex to perform per-session operations. The forced-close path rank removed from map correctly...

CVE-2026-89654

CVE-2026-89654 is a use-after-free race condition in the Ceph file system component of the Linux kernel. The vulnerable function, check_new_map(), iterates over MDS sessions and drops the global mutex without holding a reference on the session struct in three code paths. A concurrent thread can t...