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[Jeremy Bicha <jeremy@xxxxxxxxx>]

** Also affects: intel-microcode (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: intel-microcode (Ubuntu Zesty)
   Importance: Undecided
       Status: New

** Also affects: intel-microcode (Ubuntu Yakkety)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1700373

Title:
  Please update microcode to version 20170511 on all supported platforms

Status in intel-microcode package in Ubuntu:
  Confirmed
Status in intel-microcode source package in Xenial:
  Confirmed
Status in intel-microcode source package in Yakkety:
  Confirmed
Status in intel-microcode source package in Zesty:
  Confirmed

Bug description:
  NB: I am *not* directly affected by this bug.

  Henrique emailed a warning to Debian devel today [1] on a potentially
  serious issue with (sky|kaby)lake processors. Excerpt:

  "This warning advisory is relevant for users of systems with the Intel
  processors code-named "Skylake" and "Kaby Lake".  These are: the 6th and
  7th generation Intel Core processors (desktop, embedded, mobile and
  HEDT), their related server processors (such as Xeon v5 and Xeon v6), as
  well as select Intel Pentium processor models.

  TL;DR: unfixed Skylake and Kaby Lake processors could, in some
  situations, dangerously misbehave when hyper-threading is enabled.
  Disable hyper-threading immediately in BIOS/UEFI to work around the
  problem.  Read this advisory for instructions about an Intel-provided
  fix."

  It is probably a good idea to:
  (1) issue a warning to our users about this;
  (2) update intel-microcode on all our supported releases

  I leave the discussion on whether this can have security implications
  to others.

  
  [1] https://lists.debian.org/debian-devel/2017/06/msg00308.html

  ProblemType: Bug
  DistroRelease: Ubuntu 17.04
  Package: intel-microcode 3.20161104.1
  ProcVersionSignature: Ubuntu 4.10.0-24.28-generic 4.10.15
  Uname: Linux 4.10.0-24-generic x86_64
  ApportVersion: 2.20.4-0ubuntu4.1
  Architecture: amd64
  CurrentDesktop: Unity:Unity7
  Date: Sun Jun 25 10:14:19 2017
  InstallationDate: Installed on 2017-05-26 (30 days ago)
  InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
  SourcePackage: intel-microcode
  UpgradeStatus: No upgrade log present (probably fresh install)

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