CVE-2014-5149

Name	CVE-2014-5149
Description	Certain MMU virtualization operations in Xen 4.2.x through 4.4.x, when using shadow pagetables, are not preemptible, which allows local HVM guest to cause a denial of service (vcpu consumption) by invoking these operations, which process every page assigned to a guest, a different vulnerability than CVE-2014-5146.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severity	medium (attack range: local)
Debian Bugs	770230

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
xen (PTS)	wheezy	4.1.4-3+deb7u9	vulnerable
	wheezy (security)	4.1.6.lts1-13	vulnerable
	jessie (security), jessie	4.4.1-9+deb8u10	fixed
	buster, sid, stretch (security), stretch	4.8.3+comet2+shim4.10.0+comet3-1+deb9u5	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
xen	source	(unstable)	4.4.1-4	low		770230
xen	source	squeeze	(unfixed)	end-of-life

[wheezy] - xen <no-dsa> (Minor issue, too intrusive to backport)
[squeeze] - xen <end-of-life> (Unsupported in squeeze-lts)