CVE-2026-23261nvme-fc: release admin tagset if init fails
- 5.5MediumCVSS base score
- 0.13%Exploitation in 30 daysEPSS · top 97% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
In the Linux kernel, the following vulnerability has been resolved: nvme-fc: release admin tagset if init fails nvme_fabrics creates an NVMe/FC controller in following path: nvmf_dev_write() -> nvmf_create_ctrl() -> nvme_fc_create_ctrl() -> nvme_fc_init_ctrl() nvme_fc_init_ctrl() allocates the admin blk-mq resources right after nvme_add_ctrl() succeeds. If any of the subsequent steps fail (changing the controller state, scheduling connect work, etc.), we jump to the fail_ctrl path, which tears down the controller references but never frees the admin queue/tag set. The leaked blk-mq allocations match the kmemleak report seen during blktests nvme/fc. Check ctrl->ctrl.admin_tagset in the fail_ctrl path and call nvme_remove_admin_tag_set() when it is set so that all admin queue allocations are reclaimed whenever controller setup aborts.
Timeline
ID reserved
By Linux
- 2 months later
· 2 months later
Published
- 8 months later
· 8 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.13% · top 97% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 5fe335a80548e2eda5d51fab801108b323600e95 – < 7c54d3f5ebbc5982daaa004260242dc07ac943ea
- affected 17c3a66d7ea2d303f783796d62f99e2e23b68c90 – < fa301aef50e3f3b5be6ee53457608beae5aa7a01
- affected ea3442efabd0aa3930c5bab73c3901ef38ef6ac3 – < e810b290922c535feb34bc90ab549446fe94d2a3
- affected ea3442efabd0aa3930c5bab73c3901ef38ef6ac3 – < d1877cc7270302081a315a81a0ee8331f19f95c8
- affected 0d1840b2dd8fe073c020c39bf8e8e89488070801
- affected 6.6.118 – < 6.6.124
- affected 6.12.60 – < 6.12.70
- affected 6.17.10 – < 6.18
- affected 6.18
- unaffected < 6.18
- unaffected 6.6.124 – ≤ 6.6.*
- unaffected 6.12.70 – ≤ 6.12.*
- unaffected 6.18.10 – ≤ 6.18.*
- unaffected 6.19 – ≤ *
References
References4
- https://git.kernel.org/stable/c/7c54d3f5ebbc5982daaa004260242dc07ac943ea (opens in a new tab)
- https://git.kernel.org/stable/c/fa301aef50e3f3b5be6ee53457608beae5aa7a01 (opens in a new tab)
- https://git.kernel.org/stable/c/e810b290922c535feb34bc90ab549446fe94d2a3 (opens in a new tab)
- https://git.kernel.org/stable/c/d1877cc7270302081a315a81a0ee8331f19f95c8 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-12896 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-23261)Record last updated .