# nfsd: size fh_verify server sockaddr slot by xpt_locallen

CVE record · `CVE-2026-89702`

- **Identifiers:** `CVE-2026-89702`
- **State:** Confirmed
- **Severity:** CVSS 9.8 Critical
- **Critical:** Yes: CVSS 9+
- **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.

## Critical

Critical, because:

- CVSS score 9.8: 9.0 or more.

How we decide what’s critical: <https://agentprime.io/advisories/critical.md>

## Affected products, as the CNA wrote them

- Vendor: Linux. Product: Linux.
  - affected: `dcbebc86850324fbe0a993ce352f0539cd98038a to before 4c7569ad68fc8b86ca40c7e56ef21460c0344955` (git)
  - affected: `051382885552e12541cc0ebf82092be374a9ed2a to before 50d9d581d2af80799125ee62617d37e9b6b476a7` (git)
  - affected: `051382885552e12541cc0ebf82092be374a9ed2a to before 1c6a4d6c20fd42552ffc2c3dfaed2139c9477ee5` (git)
  - affected: `051382885552e12541cc0ebf82092be374a9ed2a to before 95d064f9828a20ccca5ae90a17be3e2076f25272` (git)
  - affected: `051382885552e12541cc0ebf82092be374a9ed2a to before 7ff8d6363cffff45654ea85e319f7c0c54226012` (git)
  - affected: `051382885552e12541cc0ebf82092be374a9ed2a to before 719a10e3f5f868c3c4ac3cf3648c5775d12034bd` (git)
  - affected: `051382885552e12541cc0ebf82092be374a9ed2a to before 71d068490098b1d23c63b2345e40675d3a1ca763` (git)
  - affected: `62980365d6e894234b29f44fb2bfad4f7f8bb824` (git)
  - affected: `5.15.154 to before 5.15.224` (semver)
  - Other versions: unaffected
- Vendor: Linux. Product: Linux.
  - affected: `6.0`
  - unaffected: `before 6.0` (semver)
  - unaffected: `5.15.224 to 5.15.*, inclusive` (semver)
  - unaffected: `6.1.191 to 6.1.*, inclusive` (semver)
  - unaffected: `6.6.160 to 6.6.*, inclusive` (semver)
  - unaffected: `6.12.109 to 6.12.*, inclusive` (semver)
  - unaffected: `6.18.50 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

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

- **CISA KEV:** Not listed.
- **EPSS:** 0.0050, the 43rd 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-2026-89702](https://www.cve.org/CVERecord?id=CVE-2026-89702)
- [NVD: CVE-2026-89702](https://nvd.nist.gov/vuln/detail/CVE-2026-89702)

### References from the CNA

- <https://git.kernel.org/stable/c/4c7569ad68fc8b86ca40c7e56ef21460c0344955>
- <https://git.kernel.org/stable/c/50d9d581d2af80799125ee62617d37e9b6b476a7>
- <https://git.kernel.org/stable/c/1c6a4d6c20fd42552ffc2c3dfaed2139c9477ee5>
- <https://git.kernel.org/stable/c/95d064f9828a20ccca5ae90a17be3e2076f25272>
- <https://git.kernel.org/stable/c/7ff8d6363cffff45654ea85e319f7c0c54226012>
- <https://git.kernel.org/stable/c/719a10e3f5f868c3c4ac3cf3648c5775d12034bd>
- <https://git.kernel.org/stable/c/71d068490098b1d23c63b2345e40675d3a1ca763>

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-2026-89702>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

---

The web page: <https://agentprime.io/advisories/CVE-2026-89702/>. Everything for agents: <https://agentprime.io/llms.txt>.