{"cve":"CVE-2024-42232","nvd":{"published":"2024-08-07T16:15:46.213","modified":"2026-08-04T11:19:39.860","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: fix race between delayed_work() and ceph_monc_stop()\n\nThe way the delayed work is handled in ceph_monc_stop() is prone to\nraces with mon_fault() and possibly also finish_hunting().  Both of\nthese can requeue the delayed work which wouldn't be canceled by any of\nthe following code in case that happens after cancel_delayed_work_sync()\nruns -- __close_session() doesn't mess with the delayed work in order\nto avoid interfering with the hunting interval logic.  This part was\nmissed in commit b5d91704f53e (\"libceph: behave in mon_fault() if\ncur_mon < 0\") and use-after-free can still ensue on monc and objects\nthat hang off of it, with monc->auth and monc->monmap being\nparticularly susceptible to quickly being reused.\n\nTo fix this:\n\n- clear monc->cur_mon and monc->hunting as part of closing the session\n  in ceph_monc_stop()\n- bail from delayed_work() if monc->cur_mon is cleared, similar to how\n  it's done in mon_fault() and finish_hunting() (based on monc->hunting)\n- call cancel_delayed_work_sync() after the session is closed","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-416"],"references":["https://git.kernel.org/stable/c/1177afeca833174ba83504688eec898c6214f4bf","https://git.kernel.org/stable/c/20cf67dcb7db842f941eff1af6ee5e9dc41796d7","https://git.kernel.org/stable/c/2d33654d40a05afd91ab24c9a73ab512a0670a9a","https://git.kernel.org/stable/c/33d38c5da17f8db2d80e811b7829d2822c10625e","https://git.kernel.org/stable/c/34b76d1922e41da1fa73d43b764cddd82ac9733c"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T21:53:51.317825789+00:00"},"epss":{"cve":"CVE-2024-42232","score":0.0076,"percentile":0.55296,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}