CVE-2022-42327

CVE-2022-42327 concerns the Xen hypervisor. On Intel systems that support the “virtualize APIC accesses” feature, a guest can read and write the global shared xAPIC page by moving the local APIC out of xAPIC mode, bypassing isolation between guests. The vulnerability is classified with CVSS‑3.1: ...

CVE-2022-42327: Improper Access Control

x86: unintended memory sharing between guests On Intel systems that support the "virtualize APIC accesses" feature, a guest can read and write the global shared xAPIC page by moving the local APIC out of xAPIC mode. Access to this shared page bypasses the expected isolation that should exist...