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 v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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
https://git.kernel.org/stable/c/e4c804726c4afce3ba648b982d564f6af2cfa328
https://git.kernel.org/stable/c/fc1010e7e0204ece6cc0f9af4f473e9553535eab
https://git.kernel.org/stable/c/fe46b7e06f14f6f94766832df309b249cb689d27

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-10 13:20

Updated : 2026-08-19 17:20

NVD link : CVE-2026-68153

Mitre link : CVE-2026-68153

CVE.ORG link : CVE-2026-68153

JSON object : View

Products Affected

No product.

CWE

No CWE.

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A concurrent read of the monmap debugfs\nfile can enter monmap_show() after ceph_monc_stop() has freed\nmonc->monmap, triggering a use-after-free.\n\nRemove the debugfs files before stopping the OSD and monitor clients.\ndebugfs_remove() drains active handlers and prevents new accesses, so\nthe debugfs callbacks can no longer race the rest of client teardown."}], "lastModified": "2026-08-19T17:20:32.377", "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}