CVE-2022-42327
- State
- Published
- Severity
- 7.1 High
- Published
- Nov 1, 2022
- Updated
- May 5, 2025
- Reserved
- Oct 3, 2022
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.1 High | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | CISA-ADP |
Weaknesses
- CWE-284 Improper Access Control
Affected Products
| Product | Versions |
|---|---|
xenXen |
|
References
- https://xenbits.xenproject.org/xsa/advisory-412.txt
- http://xenbits.xen.org/xsa/advisory-412.html
- [oss-security] 20221101 Xen Security Advisory 412 v2 (CVE-2022-42327) - x86: unintended memory sharing between guestsmailing-list
- FEDORA-2022-07438e12dfvendor-advisory
- FEDORA-2022-9f51d13fa3vendor-advisory
- GLSA-202402-07vendor-advisory
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