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[John Johansen <john.johansen@xxxxxxxxxxxxx>]

** Changed in: linux-lts-quantal (Ubuntu Precise)
       Status: New => Fix Committed

** Changed in: linux-lts-saucy (Ubuntu Precise)
       Status: New => Fix Committed

** Changed in: linux (Ubuntu Precise)
       Status: New => Fix Committed

** Description changed:

- x86,kvm,vmx: Preserve CR4 across VM entry
+ arch/x86/kvm/vmx.c in the KVM subsystem in the Linux kernel before
+ 3.17.2 on Intel processors does not ensure that the value in the CR4
+ control register remains the same after a VM entry, which allows host OS
+ users to kill arbitrary processes or cause a denial of service (system
+ disruption) by leveraging /dev/kvm access, as demonstrated by PR_SET_TSC
+ prctl calls within a modified copy of QEMU.
  
  Break-Fix: - d974baa398f34393db76be45f7d4d04fbdbb4a0a

-- 
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https://bugs.launchpad.net/bugs/1388970

Title:
  CVE-2014-3690

Status in “linux” package in Ubuntu:
  Fix Committed
Status in “linux-armadaxp” package in Ubuntu:
  Invalid
Status in “linux-ec2” package in Ubuntu:
  Invalid
Status in “linux-fsl-imx51” package in Ubuntu:
  Invalid
Status in “linux-lts-backport-maverick” package in Ubuntu:
  New
Status in “linux-lts-backport-natty” package in Ubuntu:
  New
Status in “linux-lts-quantal” package in Ubuntu:
  Invalid
Status in “linux-lts-raring” package in Ubuntu:
  Invalid
Status in “linux-lts-saucy” package in Ubuntu:
  Invalid
Status in “linux-mvl-dove” package in Ubuntu:
  Invalid
Status in “linux-ti-omap4” package in Ubuntu:
  Invalid
Status in “linux” source package in Lucid:
  New
Status in “linux-armadaxp” source package in Lucid:
  Invalid
Status in “linux-ec2” source package in Lucid:
  New
Status in “linux-fsl-imx51” source package in Lucid:
  Invalid
Status in “linux-lts-backport-maverick” source package in Lucid:
  New
Status in “linux-lts-backport-natty” source package in Lucid:
  New
Status in “linux-lts-quantal” source package in Lucid:
  Invalid
Status in “linux-lts-raring” source package in Lucid:
  Invalid
Status in “linux-lts-saucy” source package in Lucid:
  Invalid
Status in “linux-mvl-dove” source package in Lucid:
  Invalid
Status in “linux-ti-omap4” source package in Lucid:
  Invalid
Status in “linux” source package in Precise:
  Fix Committed
Status in “linux-armadaxp” source package in Precise:
  New
Status in “linux-ec2” source package in Precise:
  Invalid
Status in “linux-fsl-imx51” source package in Precise:
  Invalid
Status in “linux-lts-backport-maverick” source package in Precise:
  New
Status in “linux-lts-backport-natty” source package in Precise:
  New
Status in “linux-lts-quantal” source package in Precise:
  Fix Committed
Status in “linux-lts-raring” source package in Precise:
  Invalid
Status in “linux-lts-saucy” source package in Precise:
  Fix Committed
Status in “linux-mvl-dove” source package in Precise:
  Invalid
Status in “linux-ti-omap4” source package in Precise:
  New
Status in “linux” source package in Trusty:
  Fix Committed
Status in “linux-armadaxp” source package in Trusty:
  Invalid
Status in “linux-ec2” source package in Trusty:
  Invalid
Status in “linux-fsl-imx51” source package in Trusty:
  Invalid
Status in “linux-lts-backport-maverick” source package in Trusty:
  New
Status in “linux-lts-backport-natty” source package in Trusty:
  New
Status in “linux-lts-quantal” source package in Trusty:
  Invalid
Status in “linux-lts-raring” source package in Trusty:
  Invalid
Status in “linux-lts-saucy” source package in Trusty:
  Invalid
Status in “linux-mvl-dove” source package in Trusty:
  Invalid
Status in “linux-ti-omap4” source package in Trusty:
  Invalid
Status in “linux” source package in Utopic:
  Fix Committed
Status in “linux-armadaxp” source package in Utopic:
  Invalid
Status in “linux-ec2” source package in Utopic:
  Invalid
Status in “linux-fsl-imx51” source package in Utopic:
  Invalid
Status in “linux-lts-backport-maverick” source package in Utopic:
  New
Status in “linux-lts-backport-natty” source package in Utopic:
  New
Status in “linux-lts-quantal” source package in Utopic:
  Invalid
Status in “linux-lts-raring” source package in Utopic:
  Invalid
Status in “linux-lts-saucy” source package in Utopic:
  Invalid
Status in “linux-mvl-dove” source package in Utopic:
  Invalid
Status in “linux-ti-omap4” source package in Utopic:
  Invalid
Status in “linux” source package in Vivid:
  Fix Committed
Status in “linux-armadaxp” source package in Vivid:
  Invalid
Status in “linux-ec2” source package in Vivid:
  Invalid
Status in “linux-fsl-imx51” source package in Vivid:
  Invalid
Status in “linux-lts-backport-maverick” source package in Vivid:
  New
Status in “linux-lts-backport-natty” source package in Vivid:
  New
Status in “linux-lts-quantal” source package in Vivid:
  Invalid
Status in “linux-lts-raring” source package in Vivid:
  Invalid
Status in “linux-lts-saucy” source package in Vivid:
  Invalid
Status in “linux-mvl-dove” source package in Vivid:
  Invalid
Status in “linux-ti-omap4” source package in Vivid:
  Invalid

Bug description:
  arch/x86/kvm/vmx.c in the KVM subsystem in the Linux kernel before
  3.17.2 on Intel processors does not ensure that the value in the CR4
  control register remains the same after a VM entry, which allows host
  OS users to kill arbitrary processes or cause a denial of service
  (system disruption) by leveraging /dev/kvm access, as demonstrated by
  PR_SET_TSC prctl calls within a modified copy of QEMU.

  Break-Fix: - d974baa398f34393db76be45f7d4d04fbdbb4a0a

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