CVE-2016-9386
7.8
HIGH
CVSS 3.1
EPSS 0.10%
Description
The x86 emulator in Xen does not properly treat x86 NULL segments as unusable when accessing memory, which might allow local HVM guest users to gain privileges via vectors involving "unexpected" base/limit values.
How to fix CVE-2016-9386
To remediate CVE-2016-9386, upgrade the affected package to a fixed version below.
- Alpine/xen—upgrade to 4.7.1-r1 or later
- Debian/xen—upgrade to 4.8.0-1 or later
Is CVE-2016-9386 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.7.1-r1
- from 0, < 4.8.0-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |