[SECURITY] [DLA 1181-1] xen security update

Package : xen
Version : 4.1.6.lts1-10
CVE ID : CVE-2017-15588 CVE-2017-15589 CVE-2017-15592 CVE-2017-15593
CVE-2017-15595

Multiple vulnerabilities have been discovered in the Xen hypervisor:

CVE-2017-15588

Jann Horn discovered a race condition that can cause a stale TLB
entry which might result in privilege escalation, denial of
service or information leak.

CVE-2017-15589

Roger Pau Monné discovered a hypervisor stack leak in the x86 I/O
intercept code, resulting in information leaks.

CVE-2017-15592

Andrew Cooper discovered that incorrect handling of self-linear
shadow mappings for translated guests might result in denial 
of service or privilege escalation.

CVE-2017-15593

Jan Beulich discovered that page type reference counts are
mishandled which may result in denial of service.

CVE-2017-15595

Jann Horn discovered that crafted page-table stacking might result
in denial of service, privilege escalation or information leaks.

For Debian 7 "Wheezy", these problems have been fixed in version
4.1.6.lts1-10.

We recommend that you upgrade your xen packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS