kernel-packages team mailing list archive

[Luis Henriques <luis.henriques@xxxxxxxxxxxxx>]

This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
wily' to 'verification-done-wily'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: verification-needed-trusty verification-needed-utopic verification-needed-vivid verification-needed-wily

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https://bugs.launchpad.net/bugs/1520411

Title:
  powerpc/tm: Fix local DoS

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Trusty:
  Fix Committed
Status in linux source package in Vivid:
  Fix Committed
Status in linux source package in Wily:
  Fix Committed
Status in linux source package in Xenial:
  Fix Released

Bug description:
  The following two fixes have just made it into mpes powerpc fixes
  tree:

    7f821fc powerpc/tm: Check for already reclaimed tasks
    d2b9d2a powerpc/tm: Block signal return setting invalid MSR state

  They fix local DoS  (userspace can crash the OS) on powerpc POWER8
  cpus for any kernel v3.9+

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