CVE-2016-1571
6.3
MEDIUM
CVSS 3.1
EPSS 0.30%
Description
The paging_invlpg function in include/asm-x86/paging.h in Xen 3.3.x through 4.6.x, when using shadow mode paging or nested virtualization is enabled, allows local HVM guest users to cause a denial of service (host crash) via a non-canonical guest address in an INVVPID instruction, which triggers a hypervisor bug check.
How to fix CVE-2016-1571
To remediate CVE-2016-1571, upgrade the affected package to a fixed version below.
- Debian/xen—upgrade to 4.8.0~rc3-1 or later
Is CVE-2016-1571 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 4.8.0~rc3-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.3 | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H |