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CVE-2026-98466

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

HIGH
8.2
CVSS Score
Published: October 18, 2026 at 03:15 PM UTC
Updated: October 24, 2026 at 02:16 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH8.2
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
90%
1a919b17ef012ca0572bae759c27e5ea02bfb47f5.19
Vendor states this is fixed in 6.18.55 (unaffected)
Vendor states this is fixed in 7.2.9 (unaffected)
Vendor states this is fixed in 7.3 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

Source: cverecord
https://git.kernel.org/stable/c/e5dd2a91a7ae3a276e6d79806127e923936e241b
Source: cverecord
https://git.kernel.org/stable/c/22df195bff84300a3f04813d6148765c77ac565a
Source: cverecord
https://git.kernel.org/stable/c/3a8c562892b96f35bba1e00d5e455a15963bbb92

CVSS

8.2HIGHLinux
Vector?

Quick Info

StatusRECEIVED

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