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CVE-2026-68153

HIGHCVSS 7.8/10EPSS 0.13%

Last modified

CVE-2026-68153 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 0.13% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.8/10

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

EPSS Probability
0.13%

2.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

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

VendorProductVersions
LinuxLinux>= 76aa844d5b2fb8c839180d3f5874e333b297e5fd, < ac78549d186090ee7125d28c3a8c376573b36194; >= 76aa844d5b2fb8c839180d3f5874e333b297e5fd, < 463a264e9094384112a5c8b46f0a9ddaf8566904; >= 76aa844d5b2fb8c839180d3f5874e333b297e5fd, < fe46b7e06f14f6f94766832df309b249cb689d27; >= 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?
CVE-2026-68153 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.13% probability of exploitation in the next 30 days.
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