[ubuntu/xenial-security] xen 4.6.0-1ubuntu4.1 (Accepted)

[Marc Deslauriers]

xen (4.6.0-1ubuntu4.1) xenial-security; urgency=low

  * Applying Xen Security Advisories:
    - CVE-2016-3158, CVE-2016-3159 / XSA-172
      * x86: fix information leak on AMD CPUs
    - CVE-2016-3960 / XSA-173
      * x86: limit GFNs to 32 bits for shadowed superpages.
    - CVE-2016-4962 / XSA-175
      * libxl: Record backend/frontend paths in /libxl/$DOMID
      * libxl: Provide libxl__backendpath_parse_domid
      * libxl: Do not trust frontend in libxl__devices_destroy
      * libxl: Do not trust frontend in libxl__device_nextid
      * libxl: Do not trust frontend for disk eject event
      * libxl: Do not trust frontend for disk in getinfo
      * libxl: Do not trust frontend for vtpm list
      * libxl: Do not trust frontend for vtpm in getinfo
      * libxl: Do not trust frontend for nic in libxl_devid_to_device_nic
      * libxl: Do not trust frontend for nic in getinfo
      * libxl: Do not trust frontend for channel in list
      * libxl: Do not trust frontend for channel in getinfo
      * libxl: Cleanup: Have libxl__alloc_vdev use /libxl
      * libxl: Document ~/serial/ correctly
    - CVE-2016-4480 / XSA-176
      * x86/mm: fully honor PS bits in guest page table walks
    - CVE-2016-4963 / XSA-178
      * libxl: Make copy of every xs backend in /libxl in _generic_add
      * libxl: Do not trust backend in libxl__device_exists
      * libxl: Do not trust backend for vtpm in getinfo (except uuid) 
      * libxl: Do not trust backend for vtpm in getinfo (uuid)
      * libxl: cdrom eject and insert: write to /libxl
      * libxl: Do not trust backend for disk eject vdev
      * libxl: Do not trust backend for disk; fix driver domain disks list
      * libxl: Do not trust backend for disk in getinfo
      * libxl: Do not trust backend for cdrom insert
      * libxl: Do not trust backend for channel in getinfo
      * libxl: Rename libxl__device_{nic,channel}_from_xs_be to _from_xenstore
      * libxl: Rename READ_BACKEND to READ_LIBXLDEV
      * libxl: Have READ_LIBXLDEV use libxl_path rather than be_path
      * libxl: Do not trust backend in nic getinfo
      * libxl: Do not trust backend for nic in devid_to_device
      * libxl: Do not trust backend for nic in list
      * libxl: Do not trust backend in channel list
      * libxl: Cleanup: use libxl__backendpath_parse_domid in
               libxl__device_disk_from_xs_be
      * libxl: Fix NULL pointer due to XSA-178 fix wrong XS nodename
    - CVE-2016-5242 / XSA-181
      * xen/arm: Don't free p2m->first_level in p2m_teardown() before
                 it has been allocated

Date: 2016-06-14 09:25:13.889261+00:00
Changed-By: Stefan Bader <stefan.bader at canonical.com>
Signed-By: Marc Deslauriers <marc.deslauriers at canonical.com>
https://launchpad.net/ubuntu/+source/xen/4.6.0-1ubuntu4.1
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