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CVE record · CVE-2026-89653

ceph: reject export_targets ranks >= CEPH_MAX_MDS in mdsmap decode

CVSS 9.8 CriticalCriticalEPSS 0.0050 · 43rd 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 d517b3983dd3106ca92d6c5d0d09415a4a09481c to before 3740c88ca9cb2210a8dbdd55ea4cec119fbe86fe git
  • affected d517b3983dd3106ca92d6c5d0d09415a4a09481c to before 8c823bbab3c24e657469a84db96902ba82d4e8bb git
  • affected d517b3983dd3106ca92d6c5d0d09415a4a09481c to before c4addccd05bacbef2144b4db14853d0308a218ac git
  • affected d517b3983dd3106ca92d6c5d0d09415a4a09481c to before 736adee11af36e407ed902264f8b2fb5cf94b62f git
  • affected d517b3983dd3106ca92d6c5d0d09415a4a09481c to before 4d298880f82c42383b36946bafde7ccf4d804c9b git
  • affected d517b3983dd3106ca92d6c5d0d09415a4a09481c to before 96c3f5fbb0d5386e7111426f047f98cec4586674 git
  • affected d517b3983dd3106ca92d6c5d0d09415a4a09481c to before aedc9053d909508a5f56c3f49f885fc030df4730 git
Other versions: unaffected
Linux Linux
  • affected 5.15
  • unaffected before 5.15 semver
  • unaffected 5.15.221 to 5.15.*, inclusive semver
  • unaffected 6.1.188 to 6.1.*, inclusive semver
  • unaffected 6.6.157 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-2026-89653
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 0.0050, the 43rd 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.