CVE-2018-19966
8.8
HIGH
CVSS 3.1
EPSS 0.12%
Description
An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because of an interpretation conflict for a union data structure associated with shadow paging. NOTE: this issue exists because of an incorrect fix for CVE-2017-15595.
How to fix CVE-2018-19966
To remediate CVE-2018-19966, upgrade the affected package to a fixed version below.
- —upgrade to 4.11.1-r0 or later
- —upgrade to 4.11.1-1 or later
Is CVE-2018-19966 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.11.1-r0
- from 0, < 4.11.1-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |