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

Parameter	Value
Base score	5.5 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H