CVE-2017-10917

Name	CVE-2017-10917
Description	Xen through 4.8.x does not validate the port numbers of polled event channel ports, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) or possibly obtain sensitive information, aka XSA-221.
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-3969-1
NVD severity	high

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	4.11.4+37-g3263f257ca-1	fixed
	buster (security)	4.11.4+57-g41a822c392-2	fixed
	bullseye, sid	4.14.0+88-g1d1d1f5391-2	fixed

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

Package	Type	Release	Fixed Version	Origin
xen	source	wheezy	(not affected)
xen	source	jessie	4.4.1-9+deb8u10	DSA-3969-1
xen	source	stretch	4.8.1-1+deb9u3	DSA-3969-1
xen	source	(unstable)	4.8.1-1+deb9u3

[wheezy] - xen <not-affected> (Vulnerable code not present)
https://xenbits.xen.org/xsa/advisory-221.html