[SECURITY] Fedora 21 Update: xen-4.4.3-3.fc21

[updates at fedoraproject.org]

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Fedora Update Notification
FEDORA-2015-15946
2015-09-26 17:32:07.294109
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Name        : xen
Product     : Fedora 21
Version     : 4.4.3
Release     : 3.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:

libxl fails to honour readonly flag on disks with qemu-xen [XSA-142 (possible
fix)]  ----  update to xen-4.4.3, including Use after free in QEMU/Xen block
unplug protocol [XSA-139, CVE-2015-5166], QEMU leak of uninitialized heap memory
in rtl8139 device model [XSA-140, CVE-2015-5165]
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References:

  [ 1 ] Bug #1248997 - CVE-2015-5166 Qemu: BlockBackend object use after free issue (XSA-139)
        https://bugzilla.redhat.com/show_bug.cgi?id=1248997
  [ 2 ] Bug #1248760 - CVE-2015-5165 Qemu: rtl8139 uninitialized heap memory information leakage to guest (XSA-140)
        https://bugzilla.redhat.com/show_bug.cgi?id=1248760
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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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