CVE-2026-45873 Details
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.
A vulnerability in the Linux kernel's netfilter component allows for improper handling of interval overlaps in anonymous sets. Userspace can send optimized interval representations that omit end elements when intervals are adjacent. This vulnerability arises because the current overlap detection logic ignores anonymous set checks on starting elements, potentially allowing overlapping intervals to be added. The issue is particularly evident when two start elements, such as A-B and A-C (where C is less than B), are introduced. The vulnerability affects the Linux kernel stable tree.
Users can update to the latest version of the Linux kernel where this vulnerability has been addressed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/029e5f6a95e905b12d6bc20421be32a01e0eb311 | kernel.org | Patch |
| https://git.kernel.org/stable/c/05feaf826390fd16f1deb89dd9412def3b2a280f | kernel.org | Patch |
| https://git.kernel.org/stable/c/4780ec142cbb24b794129d3080eee5cac2943ffc | kernel.org | Patch |
| https://git.kernel.org/stable/c/7ca5813e1b21ef300e04593f47b073ef3217aac6 | kernel.org | Patch |
| https://git.kernel.org/stable/c/dad14d22dff1a191612acb98facceb303d0524a2 | kernel.org | Patch |
| https://git.kernel.org/stable/c/e6497e06a102870803a59570d75ed2c36d7e11b3 | kernel.org | Patch |
| https://git.kernel.org/stable/c/f1381ce0a1dd013610985e1c4260908163a427df | kernel.org | Patch |
| https://git.kernel.org/stable/c/f1535d56fc3f6c625b7e0559c006bd0318791bb1 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| NVD-CWE-noinfo | Insufficient Information to Classify Weakness | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 4.19.316, < 4.20 >= 5.4.262, < 5.5 >= 5.10.166, < 5.10.252 >= 5.15.91, < 5.15.202 >= 6.1.9, < 6.1.165 >= 6.2.1, < 6.6.128 >= 6.7, < 6.12.75 >= 6.13, < 6.18.14 >= 6.19, < 6.19.4 6.2 - 6.2 rc6 6.2 rc7 6.2 rc8 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 25, 2026 | Initial Analysis | [email protected] |
| Jun 17, 2026 | CVE Modified | kernel.org |
| May 27, 2026 | New CVE Received | kernel.org |