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CVE record · CVE-2026-89775

KVM: arm64: Handle negative S1 walk levels in VNCR TLB size evaluation

CVSS 9.3 CriticalCriticalEPSS 0.0024 · 14th percentile

Critical, because:

  • CVSS score 9.3: 9.0 or more.

How we decide what’s critical

Published by the CVE Program (CNA: Linux) at 16 Sept 2026, 08:39 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 7270cc9157f474dfc46750a34c9d7defc686b2eb to before be54a70067c7dbe1381157e8a238fa4b16ea9c05 git
  • affected 7270cc9157f474dfc46750a34c9d7defc686b2eb to before 1c9fca34b9625a67a7f1a03c8604f3df760c6c49 git
  • affected 7270cc9157f474dfc46750a34c9d7defc686b2eb to before 8053393680d4fa3eb962667d2be95dd39f0940e5 git
Other versions: unaffected
Linux Linux
  • affected 6.16
  • unaffected before 6.16 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-2026-89775
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
9.3 Critical 3.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H CNA (Linux)
  • CISA KEV Not listed.
  • EPSS 0.0024, the 14th 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 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.