5.5

CVE-2026-45873: linux

CVSS: 5.5v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2026-45873DEBIAN-CVE-2026-45873
Published 27-05-2026Last modified 27-05-2026
Open JSON

Vulnerability summary

CVE-2026-45873 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.1% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.5/10
010
Medium · v3.1 (NVD)
EPSS score
0.16%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 37 · Related 37
OPENSUSE-SU-2026:21555-1SUSE-SU-2026:23066-1SUSE-SU-2026:23068-1SUSE-SU-2026:23193-1SUSE-SU-2026:23194-1SUSE-SU-2026:23221-1

Timeline

  1. 27-05-2026
    PublishedVulnerability first disclosed.

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 metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

0.00 pp

From 0.16% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.16%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu153 products
  • linuxAll versions (No fix recorded) | < 5.15.0-186.196 | < 6.8.0-134.134
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1112.119 | < 6.8.0-1060.63
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ 4aacf3d78424293e318c616016865380b37b9cc5, < 7ca5813e1b21ef300e04593f47b073ef3217aac6 | ≥ 2bf1435fa19d2c58054391b3bba40d5510a5758c, < 029e5f6a95e905b12d6bc20421be32a01e0eb311 | ≥ 318cb24a4c3fce8140afaf84e4d45fcb76fb280b, < f1381ce0a1dd013610985e1c4260908163a427df | ≥ c9e6978e2725a7d4b6cd23b2facd3f11422c0643, < f1535d56fc3f6c625b7e0559c006bd0318791bb1 | ≥ c9e6978e2725a7d4b6cd23b2facd3f11422c0643, < 05feaf826390fd16f1deb89dd9412def3b2a280f | ≥ c9e6978e2725a7d4b6cd23b2facd3f11422c0643, < dad14d22dff1a191612acb98facceb303d0524a2 | ≥ c9e6978e2725a7d4b6cd23b2facd3f11422c0643, < e6497e06a102870803a59570d75ed2c36d7e11b3 | ≥ c9e6978e2725a7d4b6cd23b2facd3f11422c0643, < 4780ec142cbb24b794129d3080eee5cac2943ffc | 7ab87a326f20c52ff4d9972052d085be951c704b | 181859bdfb9734aca449512fccaee4cacce64aed | ≥ 5.10.166, < 5.10.252 | ≥ 5.15.91, < 5.15.202 | ≥ 6.1.9, < 6.1.165 | ≥ 4.19.316, < 4.20 | ≥ 5.4.262, < 5.5 | 6.2
  • linux_kernelEOL≥ 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
Debian1 product
  • linux< 6.1.170-1 | < 6.12.85-1 | < 6.18.14-1

3 vendors · 156 products

References

37 links
Show all 37 references