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CVE record · CVE-2026-89990

ceph: lock mutex in ceph_mds_check_access()

CVSS 9.8 CriticalCriticalEPSS 0.0061 · 49th 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 16 Sept 2026, 10:33 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 596afb0b8933ba6ed7227adcc538db26feb25c74 to before 729c1ff670ece6f3d4b1738365a0b2f90d487523 git
  • affected 596afb0b8933ba6ed7227adcc538db26feb25c74 to before ca5bfea2045ef2eb3305cf2a9d8da549b76c37d3 git
  • affected 596afb0b8933ba6ed7227adcc538db26feb25c74 to before df1a97d5313fccadb08390306d49b194fb027392 git
  • affected 596afb0b8933ba6ed7227adcc538db26feb25c74 to before a61c6ae1dae2611082b831b4aaa780878099c012 git
Other versions: unaffected
Linux Linux
  • affected 6.10
  • unaffected before 6.10 semver
  • unaffected 6.12.110 to 6.12.*, inclusive semver
  • unaffected 6.18.51 to 6.18.*, inclusive semver
  • unaffected 7.2.5 to 7.2.*, inclusive semver
  • unaffected 7.3 to *, inclusive original_commit_for_fix
Other versions: affected
Identifiers
CVE-2026-89990
CNA
Linux
Tags
Published
16 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 0.0061, the 49th percentile, on 13 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 16 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.