{"id":"CVE-2026-97409","published":"2026-09-24T17:17:18.463","lastModified":"2026-09-25T13:17:24.427","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-fc: Do not cancel requests in io target before it is initialized\n\nA new nvme-fc controller in CONNECTING state sees admin request timeout\nschedules ctrl->ioerr_work to abort inflight requests. This ends up\ncalling __nvme_fc_abort_outstanding_ios() which aborts requests in both\nadmin and io tagsets. In case fc_ctrl->tag_set was not initialized we\nsee the warning below. This is because ctrl.queue_count is initialized\nearly in nvme_fc_alloc_ctrl().\n\nnvme nvme0: NVME-FC{0}: starting error recovery Connectivity Loss\nINFO: trying to register non-static key.\nThe code is fine but needs lockdep annotation, or maybe\nlpfc 0000:ab:00.0: queue 0 connect admin queue failed (-6).\nyou didn't initialize this object before use?\nturning off the locking correctness validator.\nWorkqueue: nvme-reset-wq nvme_fc_ctrl_ioerr_work [nvme_fc]\nCall Trace:\n <TASK>\n dump_stack_lvl+0x57/0x80\n register_lock_class+0x567/0x580\n __lock_acquire+0x330/0xb90\n lock_acquire.part.0+0xad/0x210\n blk_mq_tagset_busy_iter+0xf9/0xc00\n __nvme_fc_abort_outstanding_ios+0x23f/0x320 [nvme_fc]\n nvme_fc_ctrl_ioerr_work+0x172/0x210 [nvme_fc]\n process_one_work+0x82c/0x1450\n worker_thread+0x5ee/0xfd0\n kthread+0x3a0/0x750\n ret_from_fork+0x439/0x670\n ret_from_fork_asm+0x1a/0x30\n </TASK>\n\nUpdate the check in __nvme_fc_abort_outstanding_ios() confirm that io\ntagset was created before iterating over busy requests. Also make sure\nto cancel ctrl->ioerr_work before removing io tagset.","cvssScore":8.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/da930308b4bc24c335574e85ca84ff70a988cf05","tags":[]},{"url":"https://git.kernel.org/stable/c/dd39064d2948b14dbe4f364fe4b3c9cfc632cc21","tags":[]},{"url":"https://git.kernel.org/stable/c/ee38469f88492df99e1d97f03aa40ecfd218934f","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"The flaw allows a new nvme-fc controller in the CONNECTING state to trigger a warning due to uninitialized tag sets, potentially leading to locking issues and workqueue errors.","exploitability":"Exploitation requires a new nvme-fc controller to be in the CONNECTING state and the tag set to be uninitialized, making it moderately difficult to exploit.","blast_radius":"If exploited, the impact could be significant, leading to system instability and potential denial of service conditions.","remediation":"Upgrade to the specific version mentioned in the CVE, e.g., 'Upgrade to 5.10.100 or later'.","detection":"Monitor system logs for warnings related to uninitialized tag sets and workqueue errors, such as 'INFO: trying to register non-static key' and 'queue 0 connect admin queue failed (-6).'","tags":["kernel","locking","workqueue","nvme","fc"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-09-29T09:01:47.094Z"}}