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[Christopher Townsend <christopher.townsend@xxxxxxxxxxxxx>]

** Changed in: unity/7.2
       Status: In Progress => Fix Committed

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https://bugs.launchpad.net/bugs/1410582

Title:
  [Trusty / Unity] Desktop got unlocked on its own.

Status in Unity:
  Fix Released
Status in Unity 7.2 series:
  Fix Committed
Status in unity package in Ubuntu:
  Fix Released
Status in unity source package in Trusty:
  Fix Released

Bug description:
  [Impact]

  Certain code paths may cause the Unity lockscreen to crash, which can
  allow the screen to be unlocked without a password entry.

  [Test Case]

  Unfortunately this bug only appears under certain race conditions and
  is not reliably reproduce able.

  [Regression Potential]

  The change in the code simply assumes that if a screen is already
  locked, then it is lockable this avoiding certain operations that are
  inherently racy.  It is possible that this fix does not avoid all
  possible crash conditions in the lockscreen and there may still be
  unaccounted-for crashes in the lockscreen.

  [Other Info]

  This fix was cherry picked for Ubuntu 14.04 LTS from the Ubuntu "Vivid
  Vervet" dev release where it has been in testing for some time.

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