CVE-2017-8903

Name	CVE-2017-8903
Description	Xen through 4.8.x on 64-bit platforms mishandles page tables after an IRET hypercall, which might allow PV guest OS users to execute arbitrary code on the host OS, aka XSA-213.
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-964-1, DSA-3847-1
NVD severity	high
Debian Bugs	861659

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
xen (PTS)	stretch (security), stretch	4.8.5.final+shim4.10.4-1+deb9u12	fixed
	buster, buster (security)	4.11.4+107-gef32c7afa2-1	fixed
	bullseye (security), bullseye	4.14.3-1~deb11u1	fixed
	bookworm, sid	4.14.3-1	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
xen	source	wheezy	4.1.6.lts1-8	DLA-964-1
xen	source	jessie	4.4.1-9+deb8u9	DSA-3847-1
xen	source	(unstable)	4.8.1-1+deb9u1		861659

https://xenbits.xen.org/xsa/advisory-213.html