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CVE-2022-42327

UNKNOWN
Published 2022-11-01T00:00:00.000Z
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CVSS Score

V3.1
7.1
/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.000
probability
of exploitation in the wild

There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.005
Higher than 0.5% of all CVEs

Attack Vector Metrics

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
NONE

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Xen

xen

Affected Versions:

consult Xen advisory XSA-412

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-rgfj-62rr-5vf5

Advisory Details

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 Scoring

CVSS Score

7.5

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2022-42327
WEB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ
WEB https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ
WEB https://lists.fedoraproject.org/archives/list/[email protected]/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ
WEB https://security.gentoo.org/glsa/202402-07
WEB https://xenbits.xenproject.org/xsa/advisory-412.txt
WEB http://www.openwall.com/lists/oss-security/2022/11/01/3
WEB http://xenbits.xen.org/xsa/advisory-412.html

Advisory provided by GitHub Security Advisory Database. Published: November 1, 2022, Modified: May 5, 2025

References

https://xenbits.xenproject.org/xsa/advisory-412.txt
http://xenbits.xen.org/xsa/advisory-412.html
http://www.openwall.com/lists/oss-security/2022/11/01/3
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/
https://security.gentoo.org/glsa/202402-07
Published: 2022-11-01T00:00:00.000Z
Last Modified: 2025-05-05T19:11:37.065Z
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