Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 0.5%
CVSS Severity
CVSS v3 Score 7.1
References
- http://www.openwall.com/lists/oss-security/2022/11/01/3
- http://xenbits.xen.org/xsa/advisory-412.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/
- https://security.gentoo.org/glsa/202402-07
- https://xenbits.xenproject.org/xsa/advisory-412.txt
- http://www.openwall.com/lists/oss-security/2022/11/01/3
- http://xenbits.xen.org/xsa/advisory-412.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/
- https://security.gentoo.org/glsa/202402-07
- https://xenbits.xenproject.org/xsa/advisory-412.txt
Products affected by CVE-2022-42327
-
cpe:2.3:o:fedoraproject:fedora:36
-
cpe:2.3:o:fedoraproject:fedora:37
-
cpe:2.3:o:xen:xen:4.16