CVE-2016-1571

Publication date 22 January 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

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.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
xen	15.10 wily	Fixed 4.5.1-0ubuntu1.3
	15.04 vivid	Ignored end of life
	14.04 LTS trusty	Fixed 4.4.2-0ubuntu0.14.04.5
	12.04 LTS precise	Fixed 4.1.6.1-0ubuntu0.12.04.10

Notes

mdeslaur

hypervisor packages are in universe. For issues in the hypervisor, add appropriate tags to each section, ex: Tags_xen: universe-binary

Severity score breakdown

CVSS version: CVSS v3.0

Base score 6.3 · Medium

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	High
Privileges required	Low
User interaction	None
Scope	Changed
Confidentiality impact	None
Integrity impact	None
Availability impact	High

Scores

Parameter	Value
Base score	6.3 · Medium
Exploitability score	-
Impact score	-

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:H