CVE-2018-5244
6.5
MEDIUM
CVSS 3.1
EPSS 0.06%
Description
In Xen 4.10, new infrastructure was introduced as part of an overhaul to how MSR emulation happens for guests. Unfortunately, one tracking structure isn't freed when a vcpu is destroyed. This allows guest OS administrators to cause a denial of service (host OS memory consumption) by rebooting many times.
How to fix CVE-2018-5244
To remediate CVE-2018-5244, upgrade the affected package to a fixed version below.
- Alpine/xen—upgrade to 4.10.0-r1 or later
Is CVE-2018-5244 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 4.10.0-r1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H |