CVE-2014-8595

Name	CVE-2014-8595
Description	arch/x86/x86_emulate/x86_emulate.c in Xen 3.2.1 through 4.4.x does not properly check privileges, which allows local HVM guest users to gain privileges or cause a denial of service (crash) via a crafted (1) CALL, (2) JMP, (3) RETF, (4) LCALL, (5) LJMP, or (6) LRET far branch instruction.
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)
References	DSA-3140-1
NVD severity	low
Debian Bugs	770230

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
xen (PTS)	jessie	4.4.1-9+deb8u10	fixed
	jessie (security)	4.4.4lts5-0+deb8u1	fixed
	stretch (security), stretch	4.8.5.final+shim4.10.4-1+deb9u12	fixed
	buster, buster (security)	4.11.3+24-g14b62ab3e5-1~deb10u1	fixed
	bullseye	4.11.3+24-g14b62ab3e5-1	fixed
	sid	4.11.4-1	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			770230
xen	source	squeeze	(unfixed)	end-of-life
xen	source	wheezy	4.1.4-3+deb7u4		DSA-3140-1

[squeeze] - xen <end-of-life> (Unsupported in squeeze-lts)