# NFSD: Guard admin state-revocation walks with NFSD_NET_UP

CVE record · `CVE-2026-90039`

- **Identifiers:** `CVE-2026-90039`
- **State:** Confirmed
- **Severity:** No CVSS score
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 16 Sept 2026
- **Updated:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 16 Sept 2026, 10:33 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: `1ac3629bf012592cb0320e52a1cceb319a05ad17 to before 73bf459d696ecf207a9037bf9bb70c51a459469e` (git)
  - affected: `1ac3629bf012592cb0320e52a1cceb319a05ad17 to before 104a51265042b4424085741c963cb858ac29ec0b` (git)
  - affected: `1ac3629bf012592cb0320e52a1cceb319a05ad17 to before 0146467a2fce845cb6629979c3e9c58dd3d3a6a3` (git)
  - affected: `1ac3629bf012592cb0320e52a1cceb319a05ad17 to before 2f3e6638aebc0ab8afb8b4e9816ea9a1cad85378` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.9`
  - unaffected: `before 6.9` (semver)
  - unaffected: `6.12.111 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.51 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.5 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:** 0.0019, the 8th percentile, on 13 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 16 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-90039](https://www.cve.org/CVERecord?id=CVE-2026-90039)
- [NVD: CVE-2026-90039](https://nvd.nist.gov/vuln/detail/CVE-2026-90039)

### References from the CNA

- <https://git.kernel.org/stable/c/73bf459d696ecf207a9037bf9bb70c51a459469e>
- <https://git.kernel.org/stable/c/104a51265042b4424085741c963cb858ac29ec0b>
- <https://git.kernel.org/stable/c/0146467a2fce845cb6629979c3e9c58dd3d3a6a3>
- <https://git.kernel.org/stable/c/2f3e6638aebc0ab8afb8b4e9816ea9a1cad85378>

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-2026-90039>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

---

The web page: <https://agentprime.io/advisories/CVE-2026-90039/>. Everything for agents: <https://agentprime.io/llms.txt>.