CVE-2026-98466 PUBLISHED

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

Assigner: Linux
Reserved: 25.09.2026 Published: 18.10.2026 Updated: 18.10.2026

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 1a919b17ef012ca0572bae759c27e5ea02bfb47f to e5dd2a91a7ae3a276e6d79806127e923936e241b (excl.)
  • affected from 1a919b17ef012ca0572bae759c27e5ea02bfb47f to 22df195bff84300a3f04813d6148765c77ac565a (excl.)
  • affected from 1a919b17ef012ca0572bae759c27e5ea02bfb47f to 3a8c562892b96f35bba1e00d5e455a15963bbb92 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 5.19 is affected
  • unaffected from 0 to 5.19 (excl.)
  • unaffected from 6.18.55 to 6.18.* (incl.)
  • unaffected from 7.2.9 to 7.2.* (incl.)
  • unaffected from 7.3-rc5 to * (incl.)

References