CVE-2026-98466

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.

Package Linux Kernel
Published 2026-10-18
Last modified 2026-10-18
Patch available
Yes

Affected versions

Linux kernel versions 5.19 and later are affected. Fixed in 6.18.55, 7.2.9, 7.3 and their respective stable series.

Affected from
≥ 5.19
Fixed in
✓ 6.18.55 6.18.x ✓ 7.2.9 7.2.x ✓ 7.3

References

3 total

Frequently asked questions

  • What is CVE-2026-98466?

    CVE-2026-98466 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.19 onward and has been patched in 6.18.55, 7.2.9 and 7.3. CVE-2026-98466 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • Is there a patch available for CVE-2026-98466?

    Yes. CVE-2026-98466 has been patched. Fixed versions include 6.18.55, 7.2.9 and 7.3. If you are running Linux kernel 5.19 or later up to the fix versions, apply the relevant patch for your kernel branch.

  • Is CVE-2026-98466 actively exploited?

    No. CVE-2026-98466 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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