5.5

CVE-2026-100074: linux

CVSS: 5.5v3.1MediumUndergoing analysis
AliasesUBUNTU-CVE-2026-100074DEBIAN-CVE-2026-100074
Published 25-09-2026Last modified 19-10-2026
Open JSON

Vulnerability summary

CVE-2026-100074 is a medium (CVSS 5.5) vulnerability in linux. EPSS estimates a 0.11% chance of exploitation in the next 30 days, higher than 1.3% 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
0.11%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
MGASA-2026-0506OPENSUSE-SU-2026:12074-1

Timeline

  1. 25-09-2026
    PublishedVulnerability first disclosed.
  2. 19-10-2026
    Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark bpf_refcount field as unique BPF_REFCOUNT is not marked as a unique field, while it should be. Fix this oversight.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.11%

Chance of exploitation in the next 30 days

Percentile

1%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

26-09-202619-10-2026
EPSS score
0.11%

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

Ubuntu142 products
  • linuxAll versions (No fix recorded)
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded)
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Linux2 products
  • linux≥ d54730b50bae1f3119bd686d551d66f0fcc387ca, < e42cede6f90177f4f92f80d3de18f628e61d2087 | ≥ d54730b50bae1f3119bd686d551d66f0fcc387ca, < 641f814965d733936ca3618d4d5a12a8fa9be00e | ≥ d54730b50bae1f3119bd686d551d66f0fcc387ca, < 61e655391cb19c31f94ecd4354f624c81ce4cf75 | 6.4
  • linux_kernel≥ 6.4, < 6.18.52 | ≥ 6.19, < 7.2.6
Debian1 product
  • linuxAll versions (No fix recorded) | < 7.2.6-1

3 vendors · 145 products

References

6 links