CVE-2018-19965

Name	CVE-2018-19965
Description	An issue was discovered in Xen through 4.11.x allowing 64-bit PV guest OS users to cause a denial of service (host OS crash) because #GP[0] can occur after a non-canonical address is passed to the TLB flushing code. NOTE: this issue exists because of an incorrect CVE-2017-5754 (aka Meltdown) mitigation.
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-4369-1
NVD severity	medium (attack range: local)

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	vulnerable
	jessie (security)	4.4.4lts4-0+deb8u1	vulnerable
	stretch	4.8.4+xsa273+shim4.10.1+xsa273-1+deb9u10	vulnerable
	stretch (security)	4.8.5+shim4.10.2+xsa282-1+deb9u11	fixed
	buster, sid	4.11.1-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
xen	source	(unstable)	4.11.1-1	medium
xen	source	stretch	4.8.5+shim4.10.2+xsa282-1+deb9u11	medium	DSA-4369-1

https://xenbits.xen.org/xsa/advisory-279.txt