EUVD-2026-5844

In the Linux kernel, the following vulnerability has been resolved: ceph: fix oops due to invalid pointer for kfree in parselongname This fixes a kernel oops when reading ceph snapshot directories .snap, for example by simply running ls /mnt/myceph/.snap. The variable str is guarded by freekfree,...

CVE-2025-68285 libceph: fix potential use-after-free in have_mon_and_osd_map()

In the Linux kernel, the following vulnerability has been resolved: libceph: fix potential use-after-free in havemonandosdmap The wait loop in cephopensession can race with the client receiving a new monmap or osdmap shortly after the initial map is received. Both cephmonchandlemap and handleonem...

CVE-2025-68285

CVE-2025-68285 affects the Linux kernel’s Ceph client code path (libceph). The issue is a use-after-free in have_mon_and_osd_map() where a race between map updates (monmap/osdmap) and the wait loop could dereference freed maps if epochs race alignment isn’t held under the appropriate locks. The f...

CVE-2025-39879 ceph: always call ceph_shift_unused_folios_left()

In the Linux kernel, the following vulnerability has been resolved: ceph: always call cephshiftunusedfoliosleft The function cephprocessfoliobatch sets foliobatch entries to NULL, which is an illegal state. Before foliobatchrelease crashes due to this API violation, the function...