CVE-2025-40343 (GCVE-0-2025-40343)
Vulnerability from cvelistv5
Published
2025-12-09 04:10
Modified
2025-12-20 08:52
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: nvmet-fc: avoid scheduling association deletion twice When forcefully shutting down a port via the configfs interface, nvmet_port_subsys_drop_link() first calls nvmet_port_del_ctrls() and then nvmet_disable_port(). Both functions will eventually schedule all remaining associations for deletion. The current implementation checks whether an association is about to be removed, but only after the work item has already been scheduled. As a result, it is possible for the first scheduled work item to free all resources, and then for the same work item to be scheduled again for deletion. Because the association list is an RCU list, it is not possible to take a lock and remove the list entry directly, so it cannot be looked up again. Instead, a flag (terminating) must be used to determine whether the association is already in the process of being deleted.
References
Impacted products
Vendor Product Version
Linux Linux Version: a07b4970f464f13640e28e16dad6cfa33647cc99
Version: a07b4970f464f13640e28e16dad6cfa33647cc99
Version: a07b4970f464f13640e28e16dad6cfa33647cc99
Version: a07b4970f464f13640e28e16dad6cfa33647cc99
Version: a07b4970f464f13640e28e16dad6cfa33647cc99
Version: a07b4970f464f13640e28e16dad6cfa33647cc99
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-fc: avoid scheduling association deletion twice\n\nWhen forcefully shutting down a port via the configfs interface,\nnvmet_port_subsys_drop_link() first calls nvmet_port_del_ctrls() and\nthen nvmet_disable_port(). Both functions will eventually schedule all\nremaining associations for deletion.\n\nThe current implementation checks whether an association is about to be\nremoved, but only after the work item has already been scheduled. As a\nresult, it is possible for the first scheduled work item to free all\nresources, and then for the same work item to be scheduled again for\ndeletion.\n\nBecause the association list is an RCU list, it is not possible to take\na lock and remove the list entry directly, so it cannot be looked up\nagain. Instead, a flag (terminating) must be used to determine whether\nthe association is already in the process of being deleted."
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        "dateUpdated": "2025-12-20T08:52:13.716Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
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          "url": "https://git.kernel.org/stable/c/f2537be4f8421f6495edfa0bc284d722f253841d"
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    "cveId": "CVE-2025-40343",
    "datePublished": "2025-12-09T04:10:00.973Z",
    "dateReserved": "2025-04-16T07:20:57.187Z",
    "dateUpdated": "2025-12-20T08:52:13.716Z",
    "state": "PUBLISHED"
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  }
}


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