# nfsd: close shrinker/GC/fsnotify vs per-net shutdown race in filecache

CVE record · `CVE-2026-89667`

- **Identifiers:** `CVE-2026-89667`
- **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:** 19 Oct 2026
- **Reviewed by a person:** No

Published by the CVE Program (CNA: Linux) at 11 Sept 2026, 19:45 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: `ffb402596147ac583f3464ff5c48feb9423e3838 to before b15997b53b61c74fb4d083f7261d19f389ff854f` (git)
  - affected: `ffb402596147ac583f3464ff5c48feb9423e3838 to before 6d6b9f6a75c3767250e9c23ace4e384ab8f7843e` (git)
  - affected: `ffb402596147ac583f3464ff5c48feb9423e3838 to before 08af9593e2b472fd98c00faf1bf03bdbb7203477` (git)
  - affected: `ffb402596147ac583f3464ff5c48feb9423e3838 to before 40162cfea79b9510380decfdd1795b754dc9f972` (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: `7.2.4 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:** 0.0054, 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-2026-89667](https://www.cve.org/CVERecord?id=CVE-2026-89667)
- [NVD: CVE-2026-89667](https://nvd.nist.gov/vuln/detail/CVE-2026-89667)

### References from the CNA

- <https://git.kernel.org/stable/c/b15997b53b61c74fb4d083f7261d19f389ff854f>
- <https://git.kernel.org/stable/c/6d6b9f6a75c3767250e9c23ace4e384ab8f7843e>
- <https://git.kernel.org/stable/c/08af9593e2b472fd98c00faf1bf03bdbb7203477>
- <https://git.kernel.org/stable/c/40162cfea79b9510380decfdd1795b754dc9f972>

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-2026-89667>
- Everything that needs attention now: <https://agentprime.io/advisories/critical.md>

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The web page: <https://agentprime.io/advisories/CVE-2026-89667/>. Everything for agents: <https://agentprime.io/llms.txt>.