No exploitation reported

CVE-2026-98466

KVM: arm64: Transfer the hyp stack pages out of the host stage-2

No exploitation reported by the sources we read.

Published2026-10-18

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Transfer the hyp stack pages out of the host stage-2 fix_host_ownership() walks only the linear-map alias of each memblock region, and the per-CPU hyp stack, mapped in the private VA range for its guard page, has none. Walk each stack's VA range with the same walker.

Timeline

dates in UTC

2026-10-1816:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-24 15:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-98466?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-98466?format=csv
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Versions per branch

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

CVE-2026-98466 Red Hat Product Security109 known affected
kernel: KVM: arm64: Transfer the hyp stack pages out of the host stage-2
bpftool as a component of Red Hat Enterprise Linux 9 · kernel as a component of Red Hat Enterprise Linux 9 · kernel-64k as a component of Red Hat Enterprise Linux 9 · +106 more

Full record on NVD

Fix

Workaround from the vendor Red Hat Product Security CVE-2026-98466 · 109 products--- CME Mitigation Guidance (2026-10-20) --- Disclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from https://cmetaxonomy.org. Customers are advised to indepen…
No fix available, says the vendor Red Hat Product Security CVE-2026-98466 · 106 productsFix deferred
No fix available, says the vendor Red Hat Product Security CVE-2026-98466 · 3 productsAffected

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVE recordread 2026-10-24
CNACVSS 3.18.2read 2026-10-24
FIRST EPSSEPSS score0.2 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Published: 2026-10-18
Last Modified: 2026-10-24
NVD status: Received

Frequently asked questions

What is CVE-2026-98466?

Is CVE-2026-98466 actively exploited?

Active exploitation of CVE-2026-98466 has not been confirmed. Its EPSS score was 0.2% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-98466?

CVE-2026-98466 has a CVSS v3 base score of 8.2 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

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