CVE-2016-3960

Publication date 19 April 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

Integer overflow in the x86 shadow pagetable code in Xen allows local guest OS users to cause a denial of service (host crash) or possibly gain privileges by shadowing a superpage mapping.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
xen	16.04 LTS xenial	Fixed 4.6.0-1ubuntu4.1
	15.10 wily	Fixed 4.5.1-0ubuntu1.4
	14.04 LTS trusty	Fixed 4.4.2-0ubuntu0.14.04.6
	12.04 LTS precise	Fixed 4.1.6.1-0ubuntu0.12.04.11

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
xen	Upstream: http://xenbits.xen.org/xsa/xsa173-unstable.patch Upstream: http://xenbits.xen.org/xsa/xsa173-4.3.patch Upstream: http://xenbits.xen.org/xsa/xsa173-4.4.patch Upstream: http://xenbits.xen.org/xsa/xsa173-4.5.patch Upstream: http://xenbits.xen.org/xsa/xsa173-4.6.patch

Severity score breakdown

CVSS version: CVSS v3.0

Base score 8.8 · High

Base metrics

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

Scores

Parameter	Value
Base score	8.8 · High
Exploitability score	-
Impact score	-

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