[SECURITY] Fedora 21 Update: xen-4.4.1-9.fc21

[updates at fedoraproject.org]

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Fedora Update Notification
FEDORA-2014-15951
2014-11-29 20:36:45
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Name        : xen
Product     : Fedora 21
Version     : 4.4.1
Release     : 9.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:

Excessive checking in compatibility mode hypercall argument translation,
Insufficient bounding of "REP MOVS" to MMIO emulated inside the hypervisor,
fix segfaults and failures in xl migrate --debug
Guest effectable page reference leak in MMU_MACHPHYS_UPDATE handling
Insufficient restrictions on certain MMU update hypercalls,
Missing privilege level checks in x86 emulation of far branches,
Add fix for CVE-2014-0150 to qemu-dm, though it probably isn't
exploitable from xen
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ChangeLog:

* Thu Nov 27 2014 Michael Young <m.a.young at durham.ac.uk> - 4.4.1-9
- Excessive checking in compatibility mode hypercall argument translation
	[XSA-111, CVE-2014-8866]
- Insufficient bounding of "REP MOVS" to MMIO emulated inside the hypervisor
	[XSA-112, CVE-2014-8867]
- fix segfaults and failures in xl migrate --debug (#1166461)
* Thu Nov 20 2014 Michael Young <m.a.young at durham.ac.uk> - 4.4.1-8
- Guest effectable page reference leak in MMU_MACHPHYS_UPDATE handling
	[XSA-113, CVE-2014-9030] (#1166914)
* Tue Nov 18 2014 Michael Young <m.a.young at durham.ac.uk> - 4.4.1-7
- Insufficient restrictions on certain MMU update hypercalls [XSA-109,
	CVE-2014-8594] (#1165205)
- Missing privilege level checks in x86 emulation of far branches [XSA-110,
	CVE-2014-8595] (#1165204)
- Add fix for CVE-2014-0150 to qemu-dm, though it probably isn't
	exploitable from xen (#1086776)
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References:

  [ 1 ] Bug #1166913 - CVE-2014-9030 kernel: xen: Guest effectable page reference leak in MMU_MACHPHYS_UPDATE handling
        https://bugzilla.redhat.com/show_bug.cgi?id=1166913
  [ 2 ] Bug #1160664 - CVE-2014-8594 kernel: xen: Insufficient restrictions on certain MMU update hypercalls (xsa109)
        https://bugzilla.redhat.com/show_bug.cgi?id=1160664
  [ 3 ] Bug #1160643 - CVE-2014-8595 kernel: xen: Missing privilege level checks in x86 emulation of far branches (xsa110)
        https://bugzilla.redhat.com/show_bug.cgi?id=1160643
  [ 4 ] Bug #1078846 - CVE-2014-0150 qemu: virtio-net: buffer overflow in virtio_net_handle_mac() function
        https://bugzilla.redhat.com/show_bug.cgi?id=1078846
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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 http://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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