CVEvulnerability
CVE-2022-42327
7.1 HIGH
Official page ↗
- Status
- Modified
- Published
- 2022-11-01
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.1 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.1 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- Weaknesses
- CWE-284
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 configurations
• xen xen 4.16
• fedoraproject fedora 36
• fedoraproject fedora 37
Related
Weakness · CWE (1)
- CWE-284 Improper Access Control weakness
References
- http://www.openwall.com/lists/oss-security/2022/11/01/3 Mailing List, Patch, Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-412.html Patch, Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/ lists.fedoraproject.org
- https://security.gentoo.org/glsa/202402-07 security.gentoo.org
- https://xenbits.xenproject.org/xsa/advisory-412.txt Vendor Advisory
- http://www.openwall.com/lists/oss-security/2022/11/01/3 Mailing List, Patch, Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-412.html Patch, Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/ lists.fedoraproject.org
- https://security.gentoo.org/glsa/202402-07 security.gentoo.org
- https://xenbits.xenproject.org/xsa/advisory-412.txt Vendor Advisory