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:HWeakness enumeration
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 76aa844d5b2fb8c839180d3f5874e333b297e5fd, < ac78549d186090ee7125d28c3a8c376573b36194; >= 76aa844d5b2fb8c839180d3f5874e333b297e5fd, < 463a264e9094384112a5c8b46f0a9ddaf8566904; >= 76aa844d5b2fb8c839180d3f5874e333b297e5fd, < fe46b7e06f14f6f94766832df309b249cb689d27; >= 76aa844d5b2fb8c839180d3f5874e333b297e5fd, < fc1010e7e0204ece6cc0f9af4f473e9553535eab; >= 76aa844d5b2fb8c839180d3f5874e333b297e5fd, < d3dc8889d39a676bf840132bd5c5c48cb0daba23; >= 76aa844d5b2fb8c839180d3f5874e333b297e5fd, < 8f5a3abc54ba24dbceb14cc3a719908c4f688091; >= 76aa844d5b2fb8c839180d3f5874e333b297e5fd, < b9fedda2f628e030384228de0dafc574b7fb0c2f; >= 76aa844d5b2fb8c839180d3f5874e333b297e5fd, < e4c804726c4afce3ba648b982d564f6af2cfa328 |
| Linux | Linux | 2.6.34 |
References
- 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
Timeline
- Published
- Aug 10, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Received