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CVE record · CVE-2026-89686

nfsd: fix BUG_ON in nfsd4_alloc_layout_stateid on racing delegation revoke

CVSS 9.8 CriticalCriticalEPSS 0.0071 · 54th 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, 19:46 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
VendorProductVersions
Linux Linux
  • affected c5c707f96fc9a6e5a57ca5baac892673270abe3d to before f5011c26246d1abed3dc750c9744e33cb79ff9bc git
  • affected c5c707f96fc9a6e5a57ca5baac892673270abe3d to before d12af460df27876661707efab3a8532146cb961f git
  • affected c5c707f96fc9a6e5a57ca5baac892673270abe3d to before c517f27498757e616d2a8fe6d16caad1fee422e6 git
  • affected c5c707f96fc9a6e5a57ca5baac892673270abe3d to before 607a56fea772c1f4f4989d8e255dd4f7192d9604 git
  • affected c5c707f96fc9a6e5a57ca5baac892673270abe3d to before 97bda8b4284d90897a1f1922e5082ff9e35d7c7e git
  • affected c5c707f96fc9a6e5a57ca5baac892673270abe3d to before ca94ba36172046be6a694a7986f6931e47ed4d51 git
Other versions: unaffected
Linux Linux
  • affected 4.0
  • unaffected before 4.0 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
Identifiers
CVE-2026-89686
CNA
Linux
Tags
Published
11 Sept 2026
Updated
30 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 0.0071, the 54th 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.