CVE-2022-42327 Affecting xen package, versions <4.16.2+90-g0d39a6d1ae-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.05% (20th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-XEN-3092742
  • published2 Nov 2022
  • disclosed1 Nov 2022

Introduced: 1 Nov 2022

CVE-2022-42327  (opens in a new tab)

How to fix?

Upgrade Debian:unstable xen to version 4.16.2+90-g0d39a6d1ae-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.

CVSS Scores

version 3.1