Bug 2540444 (CVE-2026-97409)
| Summary: | CVE-2026-97409 kernel: nvme-fc: Do not cancel requests in io target before it is initialized | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security <prodsec-ir-bot> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | akhatavk, aos-team-art-private, asdas, dpaolell, jdelft, jupierce, lgarciaa, mbiarnes, ppalepu, ppostler, prdhamdh, rhel-process-autobot, sghai, sidsharm, suppawar, vlaad, watson-tool-maintainers |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in the Linux kernel's NVMe over Fibre Channel (NVMe-FC) driver. When establishing a connection to an NVMe-FC target, an administrative request timeout triggers error-handling routines that attempt to abort requests on uninitialized I/O queues. A malicious or unresponsive target could trigger this behavior during connection setup, leading to a kernel crash and a Denial of Service (DoS).
|
Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
In the Linux kernel, the following vulnerability has been resolved: nvme-fc: Do not cancel requests in io target before it is initialized A new nvme-fc controller in CONNECTING state sees admin request timeout schedules ctrl->ioerr_work to abort inflight requests. This ends up calling __nvme_fc_abort_outstanding_ios() which aborts requests in both admin and io tagsets. In case fc_ctrl->tag_set was not initialized we see the warning below. This is because ctrl.queue_count is initialized early in nvme_fc_alloc_ctrl(). nvme nvme0: NVME-FC{0}: starting error recovery Connectivity Loss INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe lpfc 0000:ab:00.0: queue 0 connect admin queue failed (-6). you didn't initialize this object before use? turning off the locking correctness validator. Workqueue: nvme-reset-wq nvme_fc_ctrl_ioerr_work [nvme_fc] Call Trace: <TASK> dump_stack_lvl+0x57/0x80 register_lock_class+0x567/0x580 __lock_acquire+0x330/0xb90 lock_acquire.part.0+0xad/0x210 blk_mq_tagset_busy_iter+0xf9/0xc00 __nvme_fc_abort_outstanding_ios+0x23f/0x320 [nvme_fc] nvme_fc_ctrl_ioerr_work+0x172/0x210 [nvme_fc] process_one_work+0x82c/0x1450 worker_thread+0x5ee/0xfd0 kthread+0x3a0/0x750 ret_from_fork+0x439/0x670 ret_from_fork_asm+0x1a/0x30 </TASK> Update the check in __nvme_fc_abort_outstanding_ios() confirm that io tagset was created before iterating over busy requests. Also make sure to cancel ctrl->ioerr_work before removing io tagset.