CVE-2024-42232 (GCVE-0-2024-42232)

Vulnerability from cvelistv5 – Published: 2024-08-07 15:14 – Updated: 2026-01-05 10:52
VLAI?
Title
libceph: fix race between delayed_work() and ceph_monc_stop()
Summary
In the Linux kernel, the following vulnerability has been resolved: libceph: fix race between delayed_work() and ceph_monc_stop() The way the delayed work is handled in ceph_monc_stop() is prone to races with mon_fault() and possibly also finish_hunting(). Both of these can requeue the delayed work which wouldn't be canceled by any of the following code in case that happens after cancel_delayed_work_sync() runs -- __close_session() doesn't mess with the delayed work in order to avoid interfering with the hunting interval logic. This part was missed in commit b5d91704f53e ("libceph: behave in mon_fault() if cur_mon < 0") and use-after-free can still ensue on monc and objects that hang off of it, with monc->auth and monc->monmap being particularly susceptible to quickly being reused. To fix this: - clear monc->cur_mon and monc->hunting as part of closing the session in ceph_monc_stop() - bail from delayed_work() if monc->cur_mon is cleared, similar to how it's done in mon_fault() and finish_hunting() (based on monc->hunting) - call cancel_delayed_work_sync() after the session is closed
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0e04dc26cc594d31ee6b1382b452b6bc83b57937 , < 1177afeca833174ba83504688eec898c6214f4bf (git)
Affected: 0e04dc26cc594d31ee6b1382b452b6bc83b57937 , < 63e5d035e3a7ab7412a008f202633c5e6a0a28ea (git)
Affected: 0e04dc26cc594d31ee6b1382b452b6bc83b57937 , < 34b76d1922e41da1fa73d43b764cddd82ac9733c (git)
Affected: 0e04dc26cc594d31ee6b1382b452b6bc83b57937 , < 20cf67dcb7db842f941eff1af6ee5e9dc41796d7 (git)
Affected: 0e04dc26cc594d31ee6b1382b452b6bc83b57937 , < 2d33654d40a05afd91ab24c9a73ab512a0670a9a (git)
Affected: 0e04dc26cc594d31ee6b1382b452b6bc83b57937 , < 9525af1f58f67df387768770fcf6d6a8f23aee3d (git)
Affected: 0e04dc26cc594d31ee6b1382b452b6bc83b57937 , < 33d38c5da17f8db2d80e811b7829d2822c10625e (git)
Affected: 0e04dc26cc594d31ee6b1382b452b6bc83b57937 , < 69c7b2fe4c9cc1d3b1186d1c5606627ecf0de883 (git)
Create a notification for this product.
    Linux Linux Affected: 4.6
Unaffected: 0 , < 4.6 (semver)
Unaffected: 4.19.318 , ≤ 4.19.* (semver)
Unaffected: 5.4.280 , ≤ 5.4.* (semver)
Unaffected: 5.10.222 , ≤ 5.10.* (semver)
Unaffected: 5.15.163 , ≤ 5.15.* (semver)
Unaffected: 6.1.100 , ≤ 6.1.* (semver)
Unaffected: 6.6.41 , ≤ 6.6.* (semver)
Unaffected: 6.9.10 , ≤ 6.9.* (semver)
Unaffected: 6.10 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.