CVE-2016-6258

Name	CVE-2016-6258
Description	The PV pagetable code in arch/x86/mm.c in Xen 4.7.x and earlier allows local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, GitHub code/issues, web search, more)
References	DLA-571-1, DSA-3633-1
NVD severity	high (attack range: local)

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.lts1-8	fixed
	jessie	4.4.1-9+deb8u9	fixed
	jessie (security)	4.4.1-9+deb8u10	fixed
	buster, sid, stretch	4.8.1-1+deb9u1	fixed
	stretch (security)	4.8.1-1+deb9u3	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin
xen	source	(unstable)	4.8.0~rc3-1	high
xen	source	jessie	4.4.1-9+deb8u6	high	DSA-3633-1
xen	source	wheezy	4.1.6.lts1-1	high	DLA-571-1

http://xenbits.xen.org/xsa/advisory-182.html