CVE-2016-2271

Publication date 19 February 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

VMX in Xen 4.6.x and earlier, when using an Intel or Cyrix CPU, allows local HVM guest users to cause a denial of service (guest crash) via vectors related to a non-canonical RIP.

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 5.5 · Medium

Base metrics

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

Scores

Parameter	Value
Base score	5.5 · Medium
Exploitability score	-
Impact score	-

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