[SECURITY] Fedora 21 Update: xen-4.4.3-8.fc21

[updates at fedoraproject.org]

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Fedora Update Notification
FEDORA-2015-f150b2a8c8
2015-11-20 19:00:55.798439
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Name        : xen
Product     : Fedora 21
Version     : 4.4.3
Release     : 8.fc21
URL         : http://xen.org/
Summary     : Xen is a virtual machine monitor
Description :
This package contains the XenD daemon and xm command line
tools, needed to manage virtual machines running under the
Xen hypervisor

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Update Information:

x86: CPU lockup during exception delivery [XSA-156, CVE-2015-5307,
CVE-2015-8104]
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References:

  [ 1 ] Bug #1277172 - CVE-2015-5307 virt: guest to host DoS by triggering an infinite loop in microcode via #AC exception
        https://bugzilla.redhat.com/show_bug.cgi?id=1277172
  [ 2 ] Bug #1278496 - CVE-2015-8104 virt: guest to host DoS by triggering an infinite loop in microcode via #DB exception
        https://bugzilla.redhat.com/show_bug.cgi?id=1278496
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This update can be installed with the "yum" update program. Use
su -c 'yum update xen' at the command line.
For more information, refer to "Managing Software with yum",
available at https://docs.fedoraproject.org/yum/.

All packages are signed with the Fedora Project GPG key.  More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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