CVE-2026-45873netfilter: nft_set_rbtree: check for partial overlaps in anonymous sets
- 5.5MediumCVSS base score
- 0.16%Exploitation in 30 daysEPSS · top 95% 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: netfilter: nft_set_rbtree: check for partial overlaps in anonymous sets Userspace provides an optimized representation in case intervals are adjacent, where the end element is omitted. The existing partial overlap detection logic skips anonymous set checks on start elements for this reason. However, it is possible to add intervals that overlap to this anonymous where two start elements with the same, eg. A-B, A-C where C < B. start end A B start end A C Restore the check on overlapping start elements to report an overlap.
Timeline
ID reserved
By Linux
- 14 days later
· 14 days later
Published
- 5 months later
· 5 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)
- 0.16% · top 95% of all CVEs (12 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 4aacf3d78424293e318c616016865380b37b9cc5 – < 7ca5813e1b21ef300e04593f47b073ef3217aac6
- affected 2bf1435fa19d2c58054391b3bba40d5510a5758c – < 029e5f6a95e905b12d6bc20421be32a01e0eb311
- affected 318cb24a4c3fce8140afaf84e4d45fcb76fb280b – < f1381ce0a1dd013610985e1c4260908163a427df
- affected c9e6978e2725a7d4b6cd23b2facd3f11422c0643 – < f1535d56fc3f6c625b7e0559c006bd0318791bb1
- affected c9e6978e2725a7d4b6cd23b2facd3f11422c0643 – < 05feaf826390fd16f1deb89dd9412def3b2a280f
- affected c9e6978e2725a7d4b6cd23b2facd3f11422c0643 – < dad14d22dff1a191612acb98facceb303d0524a2
- affected c9e6978e2725a7d4b6cd23b2facd3f11422c0643 – < e6497e06a102870803a59570d75ed2c36d7e11b3
- affected c9e6978e2725a7d4b6cd23b2facd3f11422c0643 – < 4780ec142cbb24b794129d3080eee5cac2943ffc
- affected 7ab87a326f20c52ff4d9972052d085be951c704b
- affected 181859bdfb9734aca449512fccaee4cacce64aed
- affected 5.10.166 – < 5.10.252
- affected 5.15.91 – < 5.15.202
- affected 6.1.9 – < 6.1.165
- affected 4.19.316 – < 4.20
- affected 5.4.262 – < 5.5
- affected 6.2
- unaffected < 6.2
- unaffected 5.10.252 – ≤ 5.10.*
- unaffected 5.15.202 – ≤ 5.15.*
- unaffected 6.1.165 – ≤ 6.1.*
- unaffected 6.6.128 – ≤ 6.6.*
- unaffected 6.12.75 – ≤ 6.12.*
- unaffected 6.18.14 – ≤ 6.18.*
- unaffected 6.19.4 – ≤ 6.19.*
- unaffected 7.0 – ≤ *
References
References8
- https://git.kernel.org/stable/c/7ca5813e1b21ef300e04593f47b073ef3217aac6 (opens in a new tab)
- https://git.kernel.org/stable/c/029e5f6a95e905b12d6bc20421be32a01e0eb311 (opens in a new tab)
- https://git.kernel.org/stable/c/f1381ce0a1dd013610985e1c4260908163a427df (opens in a new tab)
- https://git.kernel.org/stable/c/f1535d56fc3f6c625b7e0559c006bd0318791bb1 (opens in a new tab)
- https://git.kernel.org/stable/c/05feaf826390fd16f1deb89dd9412def3b2a280f (opens in a new tab)
- https://git.kernel.org/stable/c/dad14d22dff1a191612acb98facceb303d0524a2 (opens in a new tab)
- https://git.kernel.org/stable/c/e6497e06a102870803a59570d75ed2c36d7e11b3 (opens in a new tab)
- https://git.kernel.org/stable/c/4780ec142cbb24b794129d3080eee5cac2943ffc (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-2026-32339 (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-2026-45873)Record last updated .