CVE-2026-97409: Linux kernel · nvme-fc: Do not cancel requests in io target before it is initialized
Source GCVE Database
Not known to be exploited · CVSS 8.8 High · fixed in ee38469f88492df99e1d97f03aa40ecfd218934f : patch Linux kernel soon.
Data as of 30 Oct 2026, 16:33 UTC
Thin evidence
One scorer or none| CNA (Linux) | CVSS 3.1 | 8.8 |
|---|
- Patch
- Available – fixed in ee38469f88492df99e1d97f03aa40ecfd218934f, dd39064d2948b14dbe4f364fe4b3c9cfc632cc21, da930308b4bc24c335574e85ca84ff70a988cf05 +2
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 24 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in– |
Description
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.
References
- nvd.nist.gov/vuln/detail/CVE-2026-97409 (opens in a new tab)
- git.kernel.org/stable/c/0b7c8009b3037722103032c336732d63e0507a51 (opens in a new tab)
- git.kernel.org/stable/c/5488e2706c58444a24e15773237dcc0bedcd771f (opens in a new tab)
- git.kernel.org/stable/c/da930308b4bc24c335574e85ca84ff70a988cf05 (opens in a new tab)
- git.kernel.org/stable/c/dd39064d2948b14dbe4f364fe4b3c9cfc632cc21 (opens in a new tab)
- git.kernel.org/stable/c/ee38469f88492df99e1d97f03aa40ecfd218934f (opens in a new tab)