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 (attack range: remote)

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)	4.4.4lts1-0+deb8u1	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
xen	source	(unstable)	4.8.1-1+deb9u3	high
xen	source	jessie	4.4.1-9+deb8u10	high	DSA-3969-1
xen	source	stretch	4.8.1-1+deb9u3	high	DSA-3969-1
xen	source	wheezy	(not affected)

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