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[Launchpad Bug Tracker <1674258@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package util-linux - 2.27.1-6ubuntu3.3

---------------
util-linux (2.27.1-6ubuntu3.3) xenial; urgency=medium

  * Cherrypick upstream fix to prevent lscpu crash on arm64 by
    accessing DMI in sysfs instead of /dev/mem. LP: #1674258

 -- Ike Panhc <ike.pan@xxxxxxxxxxxxx>  Thu, 18 May 2017 10:49:34 +0800

** Changed in: util-linux (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1674258

Title:
  lscpu crashs when /dev/mem is not stable to read

Status in util-linux package in Ubuntu:
  Fix Released
Status in util-linux source package in Xenial:
  Fix Released
Status in util-linux source package in Yakkety:
  Fix Released
Status in util-linux source package in Zesty:
  Fix Released

Bug description:
  [Impact]

   * Read from /dev/mem and scan DMI tables is dangerous, if /dev/mem is
  not stable to read, it will cause lscpu crash.

  [Test Case]

   * `sudo lscpu` shall not cause Segmentation fault (core dumped)

  [Regression Potential]

   * Reading from DMI tables is sysfs is more stable then reading from
  /dev/mem and if DMI tables is not available lscpu will use the old way
  to search in /dev/mem. I believe its low regression risk

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