CVE-2016-1570

Name	CVE-2016-1570
Description	The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x through 4.6.x allows local PV guests to obtain sensitive information, cause a denial of service, gain privileges, or have unspecified other impact via a crafted page identifier (MFN) to the (1) MMUEXT_MARK_SUPER or (2) MMUEXT_UNMARK_SUPER sub-op in the HYPERVISOR_mmuext_op hypercall or (3) unknown vectors related to page table updates.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
References	DLA-479-1, DSA-3519-1
Debian Bugs	823620

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
xen (PTS)	buster, buster (security)	4.11.4+107-gef32c7afa2-1	fixed
	bullseye	4.14.5+86-g1c354767d5-1	fixed
	bullseye (security)	4.14.5+94-ge49571868d-1	fixed
	bookworm, sid	4.17.0+46-gaaf74a532c-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	squeeze	(unfixed)	end-of-life
xen	source	wheezy	4.1.6.1-1+deb7u1		DLA-479-1
xen	source	jessie	4.4.1-9+deb8u4		DSA-3519-1
xen	source	(unstable)	4.8.0~rc3-1			823620

[squeeze] - xen <end-of-life> (Unsupported in Squeeze LTS)
http://xenbits.xen.org/xsa/advisory-167.html