CVE-2026-45873
Last modified
CVE-2026-45873 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 0.16% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 4.19.316, < 4.20 |
| Linux | Linux Kernel | >= 5.4.262, < 5.5 |
| Linux | Linux Kernel | >= 5.10.166, < 5.10.252 |
| Linux | Linux Kernel | >= 5.15.91, < 5.15.202 |
| Linux | Linux Kernel | >= 6.1.9, < 6.1.165 |
| Linux | Linux Kernel | >= 6.2.1, < 6.6.128 |
| Linux | Linux Kernel | >= 6.7, < 6.12.75 |
| Linux | Linux Kernel | >= 6.13, < 6.18.14 |
| Linux | Linux Kernel | >= 6.19, < 6.19.4 |
| Linux | Linux Kernel | 6.2 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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