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xen (4.8.0-1ubuntu2.2) zesty-security; urgency=low

  * Applying Xen Security Advisories:
    - XSA-217
      - x86/mm: disallow page stealing from HVM domains
    - XSA-218
      - gnttab: fix unmap pin accounting race
      - gnttab: Avoid potential double-put of maptrack entry
      - gnttab: correct maptrack table accesses
    - XSA-219
      - 86/shadow: Hold references for the duration of emulated writes
    - XSA-220
      - x86: avoid leaking PKRU and BND* between vCPU-s
    - XSA-221
      - evtchn: avoid NULL derefs
    - XSA-222
      - xen/memory: Fix return value handing of guest_remove_page()
      - guest_physmap_remove_page() needs its return value checked
    - XSA-223
      - arm: vgic: Don't update the LR when the IRQ is not enabled
    - XSA-224
      - gnttab: Fix handling of dev_bus_addr during unmap
      - gnttab: never create host mapping unless asked to
      - gnttab: correct logic to get page references during map requests
      - gnttab: __gnttab_unmap_common_complete() is all-or-nothing
    - XSA-225
      - xen/arm: vgic: Sanitize target mask used to send SGI

 -- Stefan Bader <email address hidden>  Mon, 03 Jul 2017 12:04:40 +0200

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