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CVE-2026-68153

Unknown

Last modified

CVE-2026-68153 is a vulnerability of currently unknown severity. 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..

Description

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.

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
LinuxLinux>= 76aa844d5b2fb8c839180d3f5874e333b297e5fd, < fc1010e7e0204ece6cc0f9af4f473e9553535eab; >= 76aa844d5b2fb8c839180d3f5874e333b297e5fd, < d3dc8889d39a676bf840132bd5c5c48cb0daba23; >= 76aa844d5b2fb8c839180d3f5874e333b297e5fd, < 8f5a3abc54ba24dbceb14cc3a719908c4f688091; >= 76aa844d5b2fb8c839180d3f5874e333b297e5fd, < b9fedda2f628e030384228de0dafc574b7fb0c2f; >= 76aa844d5b2fb8c839180d3f5874e333b297e5fd, < e4c804726c4afce3ba648b982d564f6af2cfa328
LinuxLinux2.6.34

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is 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.
How severe is CVE-2026-68153?
Severity scoring for CVE-2026-68153 is pending analysis.
How do I fix CVE-2026-68153?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST