CVE-2026-68153

In the Linux kernel, the following vulnerability has been resolved: libceph: remove debugfs files before client teardown ceph_destroy_client() tears down the monitor client before removing the per-client debugfs files. A concurrent read of the monmap debugfs file can enter monmap_show() after ceph_monc_stop() has freed monc->monmap, triggering a use-after-free. Remove the debugfs files before stopping the OSD and monitor clients. debugfs_remove() drains active handlers and prevents new accesses, so the debugfs callbacks can no longer race the rest of client teardown.

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.1% chance of exploitation in the next 30 days; higher than 2% of CVEs (scores of 2026-10-25)

CWE

CWE-416

Published

2026-08-10

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

References

• https://git.kernel.org/stable/c/463a264e9094384112a5c8b46f0a9ddaf8566904
• https://git.kernel.org/stable/c/8f5a3abc54ba24dbceb14cc3a719908c4f688091
• https://git.kernel.org/stable/c/ac78549d186090ee7125d28c3a8c376573b36194
• https://git.kernel.org/stable/c/b9fedda2f628e030384228de0dafc574b7fb0c2f
• https://git.kernel.org/stable/c/d3dc8889d39a676bf840132bd5c5c48cb0daba23

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