# lockd, nfsd: RCU-protect nlmsvc_ops dispatch

CVE record · `CVE-2026-89709`

- **Identifiers:** `CVE-2026-89709`
- **State:** Confirmed
- **Severity:** CVSS 8.1 High
- **Critical:** No
- **CNA:** Linux
- **Technologies:** [Linux kernel](https://agentprime.io/advisories/technology/linux-kernel.md)
- **Published:** 11 Sept 2026
- **Updated:** 30 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:46 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: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before cc2f0d79b21be69b891cbd1899daf2a1fdf9df87` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 43943532c105ea8fe26039a1347cfda4ac0fcadc` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 6e7495972039f212e336e552b58cac9dd54611c3` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 836ce2b99bcce6d68c58edd04efbc5cd1fd581af` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 3c461a1820088fb5889d73a6522369bde45527a9` (git)
  - affected: `1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 641e5e20852359b8c31149be4598884e30652f60` (git)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `2.6.12`
  - unaffected: `before 2.6.12` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.114 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.57 to 6.18.*, inclusive` (semver)
  - unaffected: `7.2.4 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

- 8.1 High, CVSS 3.1: `CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`, from CNA (Linux)

- **CISA KEV:** Not listed.
- **EPSS:** 0.0053, the 45th percentile, on 14 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 11 Sept 2026. New records show when each source confirmed them.

## Sources

- [CVE List: CVE-2026-89709](https://www.cve.org/CVERecord?id=CVE-2026-89709)
- [NVD: CVE-2026-89709](https://nvd.nist.gov/vuln/detail/CVE-2026-89709)

### References from the CNA

- <https://git.kernel.org/stable/c/cc2f0d79b21be69b891cbd1899daf2a1fdf9df87>
- <https://git.kernel.org/stable/c/43943532c105ea8fe26039a1347cfda4ac0fcadc>
- <https://git.kernel.org/stable/c/6e7495972039f212e336e552b58cac9dd54611c3>
- <https://git.kernel.org/stable/c/836ce2b99bcce6d68c58edd04efbc5cd1fd581af>
- <https://git.kernel.org/stable/c/3c461a1820088fb5889d73a6522369bde45527a9>
- <https://git.kernel.org/stable/c/641e5e20852359b8c31149be4598884e30652f60>

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-2026-89709>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89709/>. Everything for agents: <https://agentprime.io/llms.txt>.