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CVE-2026-43239smb: client: prevent races in ->query_interfaces()
- 8.8HighCVSS base score
- 0.29%Exploitation in 30 daysEPSS · top 78% 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: smb: client: prevent races in ->query_interfaces() It was possible for two query interface works to be concurrently trying to update the interfaces. Prevent this by checking and updating iface_last_update under iface_lock.
Timeline
ID reserved
By Linux
- 5 days later
· 5 days later
Published
- 6 months later
· 6 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 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | High8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.29% · top 78% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.8.
Affected products
- affected aa45dadd34e44fcd6a9df4b395bee5b5633b4cec – < de3c1653510d566a245cc54ac4bb9e50ebc5faa8
- affected aa45dadd34e44fcd6a9df4b395bee5b5633b4cec – < 93e8e3ee165ae4609a1222b516b573837103d2c3
- affected aa45dadd34e44fcd6a9df4b395bee5b5633b4cec – < ab6564f416a6eaf1199200b6100952407b438f7d
- affected aa45dadd34e44fcd6a9df4b395bee5b5633b4cec – < 6287eefaf21ec805d42f941bd368018cf397a7f5
- affected aa45dadd34e44fcd6a9df4b395bee5b5633b4cec – < 76cc4faba0343c6db945b8dc75425b33d633e1b8
- affected aa45dadd34e44fcd6a9df4b395bee5b5633b4cec – < c3c06e42e1527716c54f3ad2ced6a034b5f3a489
- affected 5.19
- unaffected < 5.19
- unaffected 6.1.191 – ≤ 6.1.*
- unaffected 6.6.128 – ≤ 6.6.*
- unaffected 6.12.75 – ≤ 6.12.*
- unaffected 6.18.16 – ≤ 6.18.*
- unaffected 6.19.6 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References6
- https://git.kernel.org/stable/c/de3c1653510d566a245cc54ac4bb9e50ebc5faa8 (opens in a new tab)
- https://git.kernel.org/stable/c/93e8e3ee165ae4609a1222b516b573837103d2c3 (opens in a new tab)
- https://git.kernel.org/stable/c/ab6564f416a6eaf1199200b6100952407b438f7d (opens in a new tab)
- https://git.kernel.org/stable/c/6287eefaf21ec805d42f941bd368018cf397a7f5 (opens in a new tab)
- https://git.kernel.org/stable/c/76cc4faba0343c6db945b8dc75425b33d633e1b8 (opens in a new tab)
- https://git.kernel.org/stable/c/c3c06e42e1527716c54f3ad2ced6a034b5f3a489 (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-2026-27800 (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-2026-43239)Record last updated .