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.

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Linux Linux unaffected
Version Status Constraints
1a919b17ef012ca0572bae759c27e5ea02bfb47f affected < e5dd2a91a7ae3a276e6d79806127e923936e241b
1a919b17ef012ca0572bae759c27e5ea02bfb47f affected < 22df195bff84300a3f04813d6148765c77ac565a
1a919b17ef012ca0572bae759c27e5ea02bfb47f affected < 3a8c562892b96f35bba1e00d5e455a15963bbb92
Linux Linux affected
Version Status Constraints
5.19 affected —
0 unaffected < 5.19
6.18.55 unaffected ≤ 6.18.*
7.2.9 unaffected ≤ 7.2.*
7.3-rc5 unaffected ≤ *

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Fixes

Solution

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Workaround

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References
Link Providers
https://git.kernel.org/stable/c/22df195bff84300a3f04813d6148765c77ac565a cve-icon cve-icon
https://git.kernel.org/stable/c/3a8c562892b96f35bba1e00d5e455a15963bbb92 cve-icon cve-icon
https://git.kernel.org/stable/c/e5dd2a91a7ae3a276e6d79806127e923936e241b cve-icon cve-icon
History

Sun, 18 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284

Sun, 18 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
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.
Title KVM: arm64: Transfer the hyp stack pages out of the host stage-2
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-10-18T15:15:18.414Z

Reserved: 2026-09-25T10:25:14.351Z

Link: CVE-2026-98466

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-18T16:16:57.090

Modified: 2026-10-18T16:16:57.090

Link: CVE-2026-98466

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-18T17:15:14Z

Weaknesses