CVE-2016-6259

Published: 02 August 2016

Xen 4.5.x through 4.7.x do not implement Supervisor Mode Access Prevention (SMAP) whitelisting in 32-bit exception and event delivery, which allows local 32-bit PV guest OS kernels to cause a denial of service (hypervisor and VM crash) by triggering a safety check.

Priority

Medium

CVSS 3 base score: 6.2

Status

Package Release Status
xen
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.6.0-1ubuntu4.2)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was not-affected [4.4.2-0ubuntu0.14.04.6])
Binaries built from this source package are in Universe and so are supported by the community.