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** Branch linked: lp:ubuntu/trusty-proposed/linux-keystone

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https://bugs.launchpad.net/bugs/1337339

Title:
  x86_64,ptrace: Enforce RIP <= TASK_SIZE_MAX (CVE-2014-4699)

Status in “linux” package in Ubuntu:
  New
Status in “linux-armadaxp” package in Ubuntu:
  New
Status in “linux-ec2” package in Ubuntu:
  Fix Released
Status in “linux-fsl-imx51” package in Ubuntu:
  New
Status in “linux-lts-quantal” package in Ubuntu:
  Fix Released
Status in “linux-lts-raring” package in Ubuntu:
  Fix Released
Status in “linux-lts-saucy” package in Ubuntu:
  Fix Released
Status in “linux-mvl-dove” package in Ubuntu:
  New
Status in “linux-ti-omap4” package in Ubuntu:
  New
Status in “linux” source package in Lucid:
  Fix Released
Status in “linux” source package in Precise:
  Fix Released
Status in “linux” source package in Saucy:
  Fix Released
Status in “linux” source package in Trusty:
  Fix Released
Status in “linux” source package in Utopic:
  New

Bug description:
  The Linux kernel before 3.15.4 on Intel processors does not properly
  restrict use of a non-canonical value for the saved RIP address in the
  case of a system call that does not use IRET, which allows local users
  to leverage a race condition and gain privileges, or cause a denial of
  service (double fault), via a crafted application that makes ptrace
  and fork system calls.

  Break-Fix: 427abfa28afedffadfca9dd8b067eb6d36bac53f
  b9cd18de4db3c9ffa7e17b0dc0ca99ed5aa4d43a

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