# bpf: Mark bpf_refcount field as unique

CVE record · `CVE-2026-100074`

- **Identifiers:** `CVE-2026-100074`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 25 Sept 2026
- **Updated:** 21 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 25 Sept 2026, 13:06 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `d54730b50bae1f3119bd686d551d66f0fcc387ca to before 015f9fbcf3382c5eb563a157ee8cabb6fbfcfe5e` (git)
  - affected: `d54730b50bae1f3119bd686d551d66f0fcc387ca to before 20b3c72c1b83054c568d2322a95e217fdc281bc3` (git)
  - affected: `d54730b50bae1f3119bd686d551d66f0fcc387ca to before e42cede6f90177f4f92f80d3de18f628e61d2087` (git)
  - affected: `d54730b50bae1f3119bd686d551d66f0fcc387ca to before 641f814965d733936ca3618d4d5a12a8fa9be00e` (git)
  - affected: `d54730b50bae1f3119bd686d551d66f0fcc387ca to before 61e655391cb19c31f94ecd4354f624c81ce4cf75` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.4`
  - unaffected: `before 6.4` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.114 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.52 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.6 to 7.2.*, inclusive` (semver)
  - unaffected: `7.3 to *, inclusive` (original_commit_for_fix)
  - Other versions: affected

## Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

## Severity and exploitation

No source has published a CVSS score for this record yet.

- **CISA KEV:** Not listed.
- **EPSS:** 0.0015, the 4th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

## Timeline

This record came from the full history of the CVE Program, published 25 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-100074](https://www.cve.org/CVERecord?id=CVE-2026-100074)
- [NVD: CVE-2026-100074](https://nvd.nist.gov/vuln/detail/CVE-2026-100074)

### References from the CNA

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

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.

## Check whether this affects you

This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it. Compare the affected versions above with what you run.

- With the agentprime MCP server (<https://api.agentprime.io/mcp>), `get_advisory` returns this record and `search_advisories` finds related ones. Setup: <https://agentprime.io/mcp.md>
- As JSON: <https://api.agentprime.io/v1/advisories/CVE-2026-100074>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-100074/>. Everything for agents: <https://agentprime.io/llms.txt>.