libceph: remove debugfs files before client teardown
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 4 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-416 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linux | Linux | 2.6.34 and later | 5.10.265, 5.15.216, 6.1.183, 6.6.148, 6.12.101, 6.18.42, 7.1.6, 7.2 | Patch available | CNA |
- Linux VendorLinux Affected 2.6.34 and later Fixed in 5.10.265, 5.15.216, 6.1.183, 6.6.148, 6.12.101, 6.18.42, 7.1.6, 7.2 Patch available CNA
Remediation
- Fix · CNA Linux (Linux) Fixed in 5.10.265, 5.15.216, 6.1.183, 6.6.148, 6.12.101, 6.18.42, 7.1.6, 7.2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
Not affected: 1 product
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2026-68153
- 2026-10-03 Alias added: GHSA-3j44-h3h4-hxhf
- 2026-10-16 CISA SSVC decision points changed
- 2026-10-20 Weakness changed · CISA ADP
References
Other 8
- https://git.kernel.org/stable/c/ac78549d186090ee7125d28c3a8c376573b36194
- https://git.kernel.org/stable/c/463a264e9094384112a5c8b46f0a9ddaf8566904
- https://git.kernel.org/stable/c/fe46b7e06f14f6f94766832df309b249cb689d27
- https://git.kernel.org/stable/c/fc1010e7e0204ece6cc0f9af4f473e9553535eab
- https://git.kernel.org/stable/c/d3dc8889d39a676bf840132bd5c5c48cb0daba23
- https://git.kernel.org/stable/c/8f5a3abc54ba24dbceb14cc3a719908c4f688091
- https://git.kernel.org/stable/c/b9fedda2f628e030384228de0dafc574b7fb0c2f
- https://git.kernel.org/stable/c/e4c804726c4afce3ba648b982d564f6af2cfa328
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Sources
- CVE-2026-68153 · CVE Program
- CVE-2026-68153 · NVD
- FIRST EPSS
- GHSA-3j44-h3h4-hxhf · GitHub Advisory Database · CC BY 4.0
- CVE-2026-68153 · Red Hat security data · CC BY 4.0
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