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[dino99 <1420643@xxxxxxxxxxxxxxxxxx>]

The canonical-x staging ppa have built it, and the installation/upgrade
goes well but the qxl driver package is removed (abi issue ?)

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https://bugs.launchpad.net/bugs/1420643

Title:
  X.Org Server 1.17.1 Released To Fix  CVE-2015-0255

Status in xorg package in Ubuntu:
  New

Bug description:
  The vulnerability addressed by xorg-server 1.17.1 is CVE-2015-0255, which was made public today. The newest X.Org CVE is described as:
  Olivier Fourdan from Red Hat has discovered a protocol handling issue in the way the X server code base handles the XkbSetGeometry request.

  The issue stems from the server trusting the client to send valid
  string lengths in the request data. A malicious client with string
  lengths exceeding the request length can cause the server to copy
  adjacent memory data into the XKB structs. This data is then available
  to the client via the XkbGetGeometry request. The data length is at
  least up to 64k, it is possible to obtain more data by chaining
  strings, each string length is then determined by whatever happens to
  be in that 16-bit region of memory.

  A similarly crafted request can likely cause the X server to crash.

  This issue has been assigned CVE-2015-0255

  http://lists.freedesktop.org/archives/xorg/2015-February/057158.html
  with avaliable patch

  Hope vivid will soon get that upgrade, as it still has 1.16.2.901

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