CVE-2026-68153

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux76aa844d5b2fb8c839180d3f5874e333b297e5fd < ac78549d186090ee7125d28c3a8c376573b36194affected
LinuxLinux76aa844d5b2fb8c839180d3f5874e333b297e5fd < 463a264e9094384112a5c8b46f0a9ddaf8566904affected
LinuxLinux76aa844d5b2fb8c839180d3f5874e333b297e5fd < fe46b7e06f14f6f94766832df309b249cb689d27affected
LinuxLinux76aa844d5b2fb8c839180d3f5874e333b297e5fd < fc1010e7e0204ece6cc0f9af4f473e9553535eabaffected
LinuxLinux76aa844d5b2fb8c839180d3f5874e333b297e5fd < d3dc8889d39a676bf840132bd5c5c48cb0daba23affected
LinuxLinux76aa844d5b2fb8c839180d3f5874e333b297e5fd < 8f5a3abc54ba24dbceb14cc3a719908c4f688091affected
LinuxLinux76aa844d5b2fb8c839180d3f5874e333b297e5fd < b9fedda2f628e030384228de0dafc574b7fb0c2faffected
LinuxLinux76aa844d5b2fb8c839180d3f5874e333b297e5fd < e4c804726c4afce3ba648b982d564f6af2cfa328affected
LinuxLinux2.6.34affected
LinuxLinux0 < 2.6.34unaffected
LinuxLinux5.10.265 <= 5.10.*unaffected
LinuxLinux5.15.216 <= 5.15.*unaffected
LinuxLinux6.1.183 <= 6.1.*unaffected
LinuxLinux6.6.148 <= 6.6.*unaffected
LinuxLinux6.12.101 <= 6.12.*unaffected
LinuxLinux6.18.42 <= 6.18.*unaffected
LinuxLinux7.1.6 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References