CVE-2026-45930net: mctp: ensure our nlmsg responses are initialised
- 5.5MediumCVSS base score
- 0.14%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: net: mctp: ensure our nlmsg responses are initialised Syed Faraz Abrar (@farazsth98) from Zellic, and Pumpkin (@u1f383) from DEVCORE Research Team working with Trend Micro Zero Day Initiative report that a RTM_GETNEIGH will return uninitalised data in the pad bytes of the ndmsg data. Ensure we're initialising the netlink data to zero, in the link, addr and neigh response messages.
Timeline
ID reserved
By Linux
- 14 days later
· 14 days later
Published
- 23 days later
· 23 days 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 · Undergoing Analysis | 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)
- 0.14% · top 97% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 583be982d93479ea3d85091b0fd0b01201ede87d – < b37da3ac099e145bcd3be82c745a8d335772e3af
- affected 583be982d93479ea3d85091b0fd0b01201ede87d – < c4f840437e7641764de15f2de951ac8335d641f1
- affected 583be982d93479ea3d85091b0fd0b01201ede87d – < 963537a26fd892f7e414a091f807b44aeee97a7d
- affected 583be982d93479ea3d85091b0fd0b01201ede87d – < 976612471a9e6ead6ceffc241e4d0a1aac90b36a
- affected 583be982d93479ea3d85091b0fd0b01201ede87d – < 54ed418de62a148a655262da682a050fa05f7924
- affected 583be982d93479ea3d85091b0fd0b01201ede87d – < 6fb6a97c86abb8592158088afaea0eb464cf9de1
- affected 583be982d93479ea3d85091b0fd0b01201ede87d – < a6a9bc544b675d8b5180f2718ec985ad267b5cbf
- affected 5.15
- unaffected < 5.15
- unaffected 5.15.210 – ≤ 5.15.*
- unaffected 6.1.176 – ≤ 6.1.*
- unaffected 6.6.143 – ≤ 6.6.*
- unaffected 6.12.93 – ≤ 6.12.*
- unaffected 6.18.35 – ≤ 6.18.*
- unaffected 6.19.4 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References7
- https://git.kernel.org/stable/c/b37da3ac099e145bcd3be82c745a8d335772e3af (opens in a new tab)
- https://git.kernel.org/stable/c/c4f840437e7641764de15f2de951ac8335d641f1 (opens in a new tab)
- https://git.kernel.org/stable/c/963537a26fd892f7e414a091f807b44aeee97a7d (opens in a new tab)
- https://git.kernel.org/stable/c/976612471a9e6ead6ceffc241e4d0a1aac90b36a (opens in a new tab)
- https://git.kernel.org/stable/c/54ed418de62a148a655262da682a050fa05f7924 (opens in a new tab)
- https://git.kernel.org/stable/c/6fb6a97c86abb8592158088afaea0eb464cf9de1 (opens in a new tab)
- https://git.kernel.org/stable/c/a6a9bc544b675d8b5180f2718ec985ad267b5cbf (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-2026-32214 (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-2026-45930)Record last updated .