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

Parameter	Value
Base score	8.8 · High
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Changed
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H