Vulnerability details
CVE-2026-68153
Linux Linux
libceph: remove debugfs files before client teardown
CVSS 3.1
7.8High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 2.6.34 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 76aa844d5b2fb8c839180d3f5874e333b297e5fd ≤ v < 463a264e9094384112a5c8b46f0a9ddaf8566904 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 76aa844d5b2fb8c839180d3f5874e333b297e5fd ≤ v < fe46b7e06f14f6f94766832df309b249cb689d27 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 76aa844d5b2fb8c839180d3f5874e333b297e5fd ≤ v < fc1010e7e0204ece6cc0f9af4f473e9553535eab | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 76aa844d5b2fb8c839180d3f5874e333b297e5fd ≤ v < ac78549d186090ee7125d28c3a8c376573b36194 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 76aa844d5b2fb8c839180d3f5874e333b297e5fd ≤ v < 8f5a3abc54ba24dbceb14cc3a719908c4f688091 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 76aa844d5b2fb8c839180d3f5874e333b297e5fd ≤ v < b9fedda2f628e030384228de0dafc574b7fb0c2f | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 76aa844d5b2fb8c839180d3f5874e333b297e5fd ≤ v < e4c804726c4afce3ba648b982d564f6af2cfa328 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 76aa844d5b2fb8c839180d3f5874e333b297e5fd ≤ v < d3dc8889d39a676bf840132bd5c5c48cb0daba23 | CVEProject cvelistV5 (CNA) |
References and advisories
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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Details
- Published
- 2026-08-10
- Last updated
- 2026-10-20
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.12%
Probability of exploitation in 30 days
2.3%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-416Use After Free