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CVE record · CVE-2026-89658

NFSD: Prevent client use-after-free during NFSv4.0 revoked-state cleanup

CVSS 9.8 CriticalCriticalEPSS 0.0062 · 50th percentile

Critical, because:

  • CVSS score 9.8: 9.0 or more.

How we decide what’s critical

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
VendorProductVersions
Linux Linux
  • affected d688d8585e6bea5e4e37f7497feea93b6b0a469c to before 0ae0d2b5c5a1b39c0b3c15d96b32a5b0c583d519 git
  • affected d688d8585e6bea5e4e37f7497feea93b6b0a469c to before b413ec5b23e3445dc9c4f273116078e2d4747626 git
  • affected d688d8585e6bea5e4e37f7497feea93b6b0a469c to before 81cf7f1413862f87b078920c838460a6a88aa030 git
  • affected d688d8585e6bea5e4e37f7497feea93b6b0a469c to before 7b4f8a1586c42d3afc3c0ac779af2db7ab1a5c55 git
Other versions: unaffected
Linux Linux
  • affected 6.9
  • unaffected before 6.9 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
Identifiers
CVE-2026-89658
CNA
Linux
Tags
Published
11 Sept 2026
Updated
19 Oct 2026

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

ScoreRatingCVSSVectorSource
9.8 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CNA (Linux)
  • CISA KEV Not listed.
  • EPSS 0.0062, the 50th 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

References from the CNA

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.