CVE-2026-80527 ceph: fix hanging __ceph_get_caps() with stale mds_wanted

In the Linux kernel, the following vulnerability has been resolved: ceph: fix hanging cephgetcaps with stale mdswanted A reader can hang forever in cephgetcaps when the client no longer holds FILERD, but local cap state still says that the capability is already wanted via mdswanted. One way to...