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CVE record · CVE-2026-89660

NFSD: Prevent client use-after-free during admin state revocation

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 1c13bf9f2e3cd5a59ef988c6c5a49fe0f02bcdfc to before e1ba4d3c5bfdca3f013b8cbc829ae2f7975d8608 git
  • affected 1c13bf9f2e3cd5a59ef988c6c5a49fe0f02bcdfc to before 549bd9868e9d77b07ea94870940d64342829c6ad git
  • affected 1c13bf9f2e3cd5a59ef988c6c5a49fe0f02bcdfc to before bf1f948691523282cc4905bc6cd325e0c0b49e6a git
  • affected 1c13bf9f2e3cd5a59ef988c6c5a49fe0f02bcdfc to before e270e5a0778e5bff852c8862ce9576ce70359393 git
Other versions: unaffected
Linux 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
Identifiers
CVE-2026-89660
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.