Vulnerabilities > CVE-2022-42327
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
NONE Summary
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.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| OS | 1 | |
| OS | 2 |
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