Medium 5.5Published Sep 25, 2026

CVE-2026-100074bpf: Mark bpf_refcount field as unique

Updated under an hour ago (Oct 28, 2026, 7:50 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Undergoing Analysis
Record last updated: Oct 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from d54730b50bae1f3119bd686d551d66f0fcc387ca before 015f9fbcf3382c5eb563a157ee8cabb6fbfcfe5e; from d54730b50bae1f3119bd686d551d66f0fcc387ca before 20b3c72c1b83054c568d2322a95e217fdc281bc3; from d54730b50bae1f3119bd686d551d66f0fcc387ca before e42cede6f90177f4f92f80d3de18f628e61d2087; from d54730b50bae1f3119bd686d551d66f0fcc387ca before 641f814965d733936ca3618d4d5a12a8fa9be00e; from d54730b50bae1f3119bd686d551d66f0fcc387ca before 61e655391cb19c31f94ecd4354f624c81ce4cf75	CNA record
linux linux_kernel linux:linux_kernel	from 6.4 before 6.18.52; from 6.19 before 7.2.6	NVD

References

References

https://git.kernel.org/stable/c/015f9fbcf3382c5eb563a157ee8cabb6fbfcfe5e
https://git.kernel.org/stable/c/20b3c72c1b83054c568d2322a95e217fdc281bc3
https://git.kernel.org/stable/c/e42cede6f90177f4f92f80d3de18f628e61d2087	patch
https://git.kernel.org/stable/c/641f814965d733936ca3618d4d5a12a8fa9be00e	patch
https://git.kernel.org/stable/c/61e655391cb19c31f94ecd4354f624c81ce4cf75	patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.