CVE-2025-40343nvmet-fc: avoid scheduling association deletion twice
- 9.8CriticalCVSS base score
- 0.70%Exploitation in 30 daysEPSS · top 46% 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: 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.
Timeline
ID reserved
By Linux
- 8 months later
· 8 months later
Published
- 10 months later
· 10 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 |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.70% · top 46% of all CVEs (14 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Affected products
- affected a07b4970f464f13640e28e16dad6cfa33647cc99 – < 2f4852db87e25d4e226b25cb6f652fef9504360e
- affected a07b4970f464f13640e28e16dad6cfa33647cc99 – < 85e2ce1920cb511d57aae59f0df6ff85b28bf04d
- affected a07b4970f464f13640e28e16dad6cfa33647cc99 – < 601ed47b2363c24d948d7bac0c23abc8bd459570
- affected a07b4970f464f13640e28e16dad6cfa33647cc99 – < 04d17540ef51e2c291eb863ca87fd332259b2d40
- affected a07b4970f464f13640e28e16dad6cfa33647cc99 – < c09ac9a63fc3aaf4670ad7b5e4f5afd764424154
- affected a07b4970f464f13640e28e16dad6cfa33647cc99 – < f2537be4f8421f6495edfa0bc284d722f253841d
- affected 4.8
- unaffected < 4.8
- unaffected 5.15.197 – ≤ 5.15.*
- unaffected 6.1.159 – ≤ 6.1.*
- unaffected 6.6.117 – ≤ 6.6.*
- unaffected 6.12.58 – ≤ 6.12.*
- unaffected 6.17.8 – ≤ 6.17.*
- unaffected 6.18 – ≤ *
References
References6
- https://git.kernel.org/stable/c/2f4852db87e25d4e226b25cb6f652fef9504360e (opens in a new tab)
- https://git.kernel.org/stable/c/85e2ce1920cb511d57aae59f0df6ff85b28bf04d (opens in a new tab)
- https://git.kernel.org/stable/c/601ed47b2363c24d948d7bac0c23abc8bd459570 (opens in a new tab)
- https://git.kernel.org/stable/c/04d17540ef51e2c291eb863ca87fd332259b2d40 (opens in a new tab)
- https://git.kernel.org/stable/c/c09ac9a63fc3aaf4670ad7b5e4f5afd764424154 (opens in a new tab)
- https://git.kernel.org/stable/c/f2537be4f8421f6495edfa0bc284d722f253841d (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-2025-201859 (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-2025-40343)Record last updated .