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CVE-2022-42327

nvd nist
Published: Nov 1, 2022Modified: Jun 17, 2026

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7.1
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Exploitability: 1.8 / Impact: 5.2
Source: NVD

Description

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.

Affected (3)

Products: Xen: Xen · Fedoraproject: Fedora
Xen
1 product
Xen
Fedoraproject
1 product
Fedora
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Xen
Version 4.16
Configuration B
2 vulnerable
Vulnerable SoftwareAffected Versions
Fedoraproject
Fedora
Version 36
Fedora
Version 37

Related CWEs

CWE-284
Improper Access Control
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

References (12)

Source: security@xen.org
Mailing ListPatchThird Party Advisory
Source: security@xen.org
PatchVendor Advisory
Source: security@xen.org
Source: security@xen.org
Source: security@xen.org
Source: security@xen.org
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListPatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
PatchVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory

Timeline

No history available yet.