CVE-2022-42327
7.1
HIGH
CVSS 3.1
EPSS 0.01%
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.
How to fix CVE-2022-42327
To remediate CVE-2022-42327, upgrade the affected package to a fixed version below.
- Alpine/xen—upgrade to 4.15.4-r0 or later
- —upgrade to 4.16.2+90-g0d39a6d1ae-1 or later
Is CVE-2022-42327 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.15.4-r0
- from 0, < 4.16.2+90-g0d39a6d1ae-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.1 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |