All vulnerabilities

Servers and applications

CVE-2022-42327

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 between two guests.

Severity
High 7.1
Published
1 Nov 2022
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
XenServers and applications · cpe:o:xen:xen
  • Version 4.16

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2022-42327
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2022-42327