CVE-2026-68153
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
10/08/2026
Last modified:
19/08/2026
Description
In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
libceph: remove debugfs files before client teardown<br />
<br />
ceph_destroy_client() tears down the monitor client before removing<br />
the per-client debugfs files. A concurrent read of the monmap debugfs<br />
file can enter monmap_show() after ceph_monc_stop() has freed<br />
monc->monmap, triggering a use-after-free.<br />
<br />
Remove the debugfs files before stopping the OSD and monitor clients.<br />
debugfs_remove() drains active handlers and prevents new accesses, so<br />
the debugfs callbacks can no longer race the rest of client teardown.
Impact
Base Score 3.x
7.80
Severity 3.x
HIGH
References to Advisories, Solutions, and Tools
- 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