CVE-2016-3712

Name	CVE-2016-3712
Description	Integer overflow in the VGA module in QEMU allows local guest OS users to cause a denial of service (out-of-bounds read and QEMU process crash) by editing VGA registers in VBE mode.
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	DLA-539-1, DLA-540-1, DLA-571-1, DSA-3573-1
NVD severity	low (attack range: local)
Debian Bugs	823830

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
qemu (PTS)	jessie (security), jessie	1:2.1+dfsg-12+deb8u6	fixed
	stretch (security), stretch	1:2.8+dfsg-6+deb9u4	fixed
	buster, sid	1:2.12+dfsg-3	fixed
xen (PTS)	jessie (security), jessie	4.4.1-9+deb8u10	fixed
	buster, sid, stretch	4.8.3+xsa267+shim4.10.1+xsa267-1+deb9u9	fixed
	stretch (security)	4.8.4+xsa273+shim4.10.1+xsa273-1+deb9u10	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
qemu	source	(unstable)	1:2.6+dfsg-1	low		823830
qemu	source	jessie	1:2.1+dfsg-12+deb8u6	low	DSA-3573-1
qemu	source	wheezy	1.1.2+dfsg-6a+deb7u13	low	DLA-540-1
qemu-kvm	source	(unstable)	(unfixed)	low
qemu-kvm	source	wheezy	1.1.2+dfsg-6+deb7u13	low	DLA-539-1
xen	source	(unstable)	4.4.0-1	low
xen	source	wheezy	4.1.6.lts1-1	low	DLA-571-1

Notes

[wheezy] - xen <no-dsa> (default configuration not vulnerable)
Xen switched to qemu-system in 4.4.0-1
http://xenbits.xen.org/xsa/advisory-179.html
mitigation: run HVM in stubdomains, PV, default video card not vulnerable, i386-only