CVE-2026-45873netfilter: nft_set_rbtree: check for partial overlaps in anonymous sets
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- May 27, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 4aacf3d78424293e318c616016865380b37b9cc5 before 7ca5813e1b21ef300e04593f47b073ef3217aac6; from 2bf1435fa19d2c58054391b3bba40d5510a5758c before 029e5f6a95e905b12d6bc20421be32a01e0eb311; from 318cb24a4c3fce8140afaf84e4d45fcb76fb280b before f1381ce0a1dd013610985e1c4260908163a427df; from c9e6978e2725a7d4b6cd23b2facd3f11422c0643 before f1535d56fc3f6c625b7e0559c006bd0318791bb1; from c9e6978e2725a7d4b6cd23b2facd3f11422c0643 before 05feaf826390fd16f1deb89dd9412def3b2a280f; from c9e6978e2725a7d4b6cd23b2facd3f11422c0643 before dad14d22dff1a191612acb98facceb303d0524a2; from c9e6978e2725a7d4b6cd23b2facd3f11422c0643 before e6497e06a102870803a59570d75ed2c36d7e11b3; from c9e6978e2725a7d4b6cd23b2facd3f11422c0643 before 4780ec142cbb24b794129d3080eee5cac2943ffc; and 7 more ranges | CNA record |
linux linux_kernel linux:linux_kernel | from 4.19.316 before 4.20; from 5.4.262 before 5.5; from 5.10.166 before 5.10.252; from 5.15.91 before 5.15.202; from 6.1.9 before 6.1.165; from 6.2.1 before 6.6.128; from 6.7 before 6.12.75; from 6.13 before 6.18.14; and 5 more ranges | NVD |
References
- https://git.kernel.org/stable/c/7ca5813e1b21ef300e04593f47b073ef3217aac6patch
- https://git.kernel.org/stable/c/029e5f6a95e905b12d6bc20421be32a01e0eb311patch
- https://git.kernel.org/stable/c/f1381ce0a1dd013610985e1c4260908163a427dfpatch
- https://git.kernel.org/stable/c/f1535d56fc3f6c625b7e0559c006bd0318791bb1patch
- https://git.kernel.org/stable/c/05feaf826390fd16f1deb89dd9412def3b2a280fpatch
- https://git.kernel.org/stable/c/dad14d22dff1a191612acb98facceb303d0524a2patch
- https://git.kernel.org/stable/c/e6497e06a102870803a59570d75ed2c36d7e11b3patch
- https://git.kernel.org/stable/c/4780ec142cbb24b794129d3080eee5cac2943ffcpatch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.