Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.19.316, < 4.20 |
References
- https://git.kernel.org/stable/c/029e5f6a95e905b12d6bc20421be32a01e0eb311Patch
- https://git.kernel.org/stable/c/05feaf826390fd16f1deb89dd9412def3b2a280fPatch
- https://git.kernel.org/stable/c/4780ec142cbb24b794129d3080eee5cac2943ffcPatch
- https://git.kernel.org/stable/c/7ca5813e1b21ef300e04593f47b073ef3217aac6Patch
- https://git.kernel.org/stable/c/dad14d22dff1a191612acb98facceb303d0524a2Patch
- https://git.kernel.org/stable/c/e6497e06a102870803a59570d75ed2c36d7e11b3Patch
- https://git.kernel.org/stable/c/f1381ce0a1dd013610985e1c4260908163a427dfPatch
- https://git.kernel.org/stable/c/f1535d56fc3f6c625b7e0559c006bd0318791bb1Patch
FAQ
What is CVE-2026-45873?
CVE-2026-45873 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 int...
How severe is CVE-2026-45873?
CVE-2026-45873 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-45873?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.