Vulnerability Description
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
- https://git.kernel.org/stable/c/04d17540ef51e2c291eb863ca87fd332259b2d40
- https://git.kernel.org/stable/c/2f4852db87e25d4e226b25cb6f652fef9504360e
- https://git.kernel.org/stable/c/601ed47b2363c24d948d7bac0c23abc8bd459570
- https://git.kernel.org/stable/c/85e2ce1920cb511d57aae59f0df6ff85b28bf04d
- https://git.kernel.org/stable/c/c09ac9a63fc3aaf4670ad7b5e4f5afd764424154
- https://git.kernel.org/stable/c/f2537be4f8421f6495edfa0bc284d722f253841d
FAQ
What is CVE-2025-40343?
CVE-2025-40343 is a documented vulnerability. 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_...
How severe is CVE-2025-40343?
CVSS scoring is not yet available for CVE-2025-40343. Check NVD for updates.
Is there a patch for CVE-2025-40343?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.