kernel-packages team mailing list archive

Thread
Date
[Bug 1089604] Re: CVE-2012-4461

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: John Johansen <john.johansen@xxxxxxxxxxxxx>
Date: Tue, 27 Jan 2015 21:25:54 -0000
Reply-to: Bug 1089604 <1089604@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
** Also affects: linux (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux-fsl-imx51 (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux-mvl-dove (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux-ec2 (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux-ti-omap4 (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-backport-maverick (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-backport-natty (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-backport-oneiric (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux-armadaxp (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-quantal (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-trusty (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux-fsl-imx51 (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux-mvl-dove (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux-ec2 (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux-ti-omap4 (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-backport-maverick (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-backport-natty (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-backport-oneiric (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux-armadaxp (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-quantal (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux-lts-trusty (Ubuntu Utopic)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Vivid)
   Importance: Medium
       Status: Invalid

** Also affects: linux-fsl-imx51 (Ubuntu Vivid)
   Importance: Medium
       Status: Invalid

** Also affects: linux-mvl-dove (Ubuntu Vivid)
   Importance: Medium
       Status: Invalid

** Also affects: linux-ec2 (Ubuntu Vivid)
   Importance: Medium
       Status: Invalid

** Also affects: linux-ti-omap4 (Ubuntu Vivid)
   Importance: Medium
       Status: Fix Released

** Also affects: linux-lts-backport-maverick (Ubuntu Vivid)
   Importance: Medium
       Status: Invalid

** Also affects: linux-lts-backport-natty (Ubuntu Vivid)
   Importance: Medium
       Status: Invalid

** Also affects: linux-lts-backport-oneiric (Ubuntu Vivid)
   Importance: Medium
       Status: Invalid

** Also affects: linux-armadaxp (Ubuntu Vivid)
   Importance: Medium
       Status: Fix Released

** Also affects: linux-lts-quantal (Ubuntu Vivid)
   Importance: Medium
       Status: Invalid

** Also affects: linux-lts-trusty (Ubuntu Vivid)
   Importance: Undecided
       Status: New

** No longer affects: linux-lts-trusty (Ubuntu Hardy)

** No longer affects: linux-lts-trusty (Ubuntu Oneiric)

** No longer affects: linux-lts-trusty (Ubuntu Quantal)

** No longer affects: linux-lts-trusty (Ubuntu Raring)

** No longer affects: linux-armadaxp (Ubuntu Hardy)

** No longer affects: linux-armadaxp (Ubuntu Oneiric)

** No longer affects: linux-armadaxp (Ubuntu Quantal)

** No longer affects: linux-armadaxp (Ubuntu Raring)

** No longer affects: linux-ec2 (Ubuntu Hardy)

** No longer affects: linux-ec2 (Ubuntu Oneiric)

** No longer affects: linux-ec2 (Ubuntu Quantal)

** No longer affects: linux-ec2 (Ubuntu Raring)

** No longer affects: linux-goldfish (Ubuntu Hardy)

** No longer affects: linux-goldfish (Ubuntu Oneiric)

** No longer affects: linux-goldfish (Ubuntu Quantal)

** No longer affects: linux-goldfish (Ubuntu Raring)

** No longer affects: linux-lts-saucy (Ubuntu Hardy)

** No longer affects: linux-lts-saucy (Ubuntu Oneiric)

** No longer affects: linux-lts-saucy (Ubuntu Quantal)

** No longer affects: linux-lts-saucy (Ubuntu Raring)

** No longer affects: linux-lts-quantal (Ubuntu Hardy)

** No longer affects: linux-lts-quantal (Ubuntu Oneiric)

** No longer affects: linux-lts-quantal (Ubuntu Quantal)

** No longer affects: linux-lts-quantal (Ubuntu Raring)

** No longer affects: linux-mvl-dove (Ubuntu Hardy)

** No longer affects: linux-mvl-dove (Ubuntu Oneiric)

** No longer affects: linux-mvl-dove (Ubuntu Quantal)

** No longer affects: linux-mvl-dove (Ubuntu Raring)

** No longer affects: linux-ti-omap4 (Ubuntu Hardy)

** No longer affects: linux-ti-omap4 (Ubuntu Oneiric)

** No longer affects: linux-ti-omap4 (Ubuntu Quantal)

** No longer affects: linux-ti-omap4 (Ubuntu Raring)

** No longer affects: linux (Ubuntu Hardy)

** No longer affects: linux (Ubuntu Oneiric)

** No longer affects: linux (Ubuntu Quantal)

** No longer affects: linux (Ubuntu Raring)

** No longer affects: linux-mako (Ubuntu Hardy)

** No longer affects: linux-mako (Ubuntu Oneiric)

** No longer affects: linux-mako (Ubuntu Quantal)

** No longer affects: linux-mako (Ubuntu Raring)

** No longer affects: linux-fsl-imx51 (Ubuntu Hardy)

** No longer affects: linux-fsl-imx51 (Ubuntu Oneiric)

** No longer affects: linux-fsl-imx51 (Ubuntu Quantal)

** No longer affects: linux-fsl-imx51 (Ubuntu Raring)

** No longer affects: linux-lts-utopic (Ubuntu Hardy)

** No longer affects: linux-lts-utopic (Ubuntu Oneiric)

** No longer affects: linux-lts-utopic (Ubuntu Quantal)

** No longer affects: linux-lts-utopic (Ubuntu Raring)

** No longer affects: linux-flo (Ubuntu Hardy)

** No longer affects: linux-flo (Ubuntu Oneiric)

** No longer affects: linux-flo (Ubuntu Quantal)

** No longer affects: linux-flo (Ubuntu Raring)

** No longer affects: linux-lts-raring (Ubuntu Hardy)

** No longer affects: linux-lts-raring (Ubuntu Oneiric)

** No longer affects: linux-lts-raring (Ubuntu Quantal)

** No longer affects: linux-lts-raring (Ubuntu Raring)

** No longer affects: linux-manta (Ubuntu Hardy)

** No longer affects: linux-manta (Ubuntu Oneiric)

** No longer affects: linux-manta (Ubuntu Quantal)

** No longer affects: linux-manta (Ubuntu Raring)

** Changed in: linux-lts-trusty (Ubuntu Precise)
       Status: New => Invalid

** Changed in: linux-lts-trusty (Ubuntu Precise)
   Importance: Undecided => Medium

** Changed in: linux-lts-trusty (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-lts-trusty (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-lts-trusty (Ubuntu Lucid)
       Status: New => Invalid

** Changed in: linux-lts-trusty (Ubuntu Lucid)
   Importance: Undecided => Medium

** Changed in: linux-lts-trusty (Ubuntu Vivid)
       Status: New => Invalid

** Changed in: linux-lts-trusty (Ubuntu Vivid)
   Importance: Undecided => Medium

** Changed in: linux-lts-trusty (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-lts-trusty (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-lts-quantal (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-lts-quantal (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-lts-quantal (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-lts-quantal (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-ti-omap4 (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-ti-omap4 (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-ti-omap4 (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-ti-omap4 (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-ti-omap4 (Ubuntu Vivid)
       Status: Fix Released => Invalid

** Changed in: linux-armadaxp (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-armadaxp (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-armadaxp (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-armadaxp (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-armadaxp (Ubuntu Vivid)
       Status: Fix Released => Invalid

** Changed in: linux-mvl-dove (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-mvl-dove (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-mvl-dove (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-mvl-dove (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-manta (Ubuntu Precise)
       Status: New => Invalid

** Changed in: linux-manta (Ubuntu Precise)
   Importance: Undecided => Medium

** Changed in: linux-manta (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-manta (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-manta (Ubuntu Lucid)
       Status: New => Invalid

** Changed in: linux-manta (Ubuntu Lucid)
   Importance: Undecided => Medium

** Changed in: linux-manta (Ubuntu Vivid)
       Status: New => Invalid

** Changed in: linux-manta (Ubuntu Vivid)
   Importance: Undecided => Medium

** Changed in: linux-manta (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-manta (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-ec2 (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-ec2 (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-ec2 (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-ec2 (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-mako (Ubuntu Precise)
       Status: New => Invalid

** Changed in: linux-mako (Ubuntu Precise)
   Importance: Undecided => Medium

** Changed in: linux-mako (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-mako (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-mako (Ubuntu Lucid)
       Status: New => Invalid

** Changed in: linux-mako (Ubuntu Lucid)
   Importance: Undecided => Medium

** Changed in: linux-mako (Ubuntu Vivid)
   Importance: Undecided => Medium

** Changed in: linux-mako (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-fsl-imx51 (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-fsl-imx51 (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-fsl-imx51 (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-fsl-imx51 (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-lts-utopic (Ubuntu Precise)
       Status: New => Invalid

** Changed in: linux-lts-utopic (Ubuntu Precise)
   Importance: Undecided => Medium

** Changed in: linux-lts-utopic (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-lts-utopic (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-lts-utopic (Ubuntu Lucid)
       Status: New => Invalid

** Changed in: linux-lts-utopic (Ubuntu Lucid)
   Importance: Undecided => Medium

** Changed in: linux-lts-utopic (Ubuntu Vivid)
       Status: New => Invalid

** Changed in: linux-lts-utopic (Ubuntu Vivid)
   Importance: Undecided => Medium

** Changed in: linux-lts-utopic (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-lts-utopic (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-goldfish (Ubuntu Precise)
       Status: New => Invalid

** Changed in: linux-goldfish (Ubuntu Precise)
   Importance: Undecided => Medium

** Changed in: linux-goldfish (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-goldfish (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-goldfish (Ubuntu Lucid)
       Status: New => Invalid

** Changed in: linux-goldfish (Ubuntu Lucid)
   Importance: Undecided => Medium

** Changed in: linux-goldfish (Ubuntu Vivid)
       Status: New => Invalid

** Changed in: linux-goldfish (Ubuntu Vivid)
   Importance: Undecided => Medium

** Changed in: linux-goldfish (Ubuntu Utopic)
       Status: New => Invalid

** Changed in: linux-goldfish (Ubuntu Utopic)
   Importance: Undecided => Medium

** Changed in: linux-flo (Ubuntu Precise)
       Status: New => Invalid

** Changed in: linux-flo (Ubuntu Precise)
   Importance: Undecided => Medium

** Changed in: linux-flo (Ubuntu Trusty)
       Status: New => Invalid

** Changed in: linux-flo (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux-flo (Ubuntu Lucid)
       Status: New => Invalid

** Changed in: linux-flo (Ubuntu Lucid)
   Importance: Undecided => Medium

** Changed in: linux-flo (Ubuntu Vivid)
   Importance: Undecided => Medium

** Changed in: linux-flo (Ubuntu Utopic)
   Importance: Undecided => Medium

** Description changed:

- kernel: kvm: invalid opcode oops on SET_SREGS with OSXSAVE bit set. On
- hosts without the XSAVE support unprivileged local user can trigger oops
- by setting X86_CR4_OSXSAVE bit in guest cr4 register using KVM_SET_SREGS
- ioctl and later issuing KVM_RUN ioctl.
+ The KVM subsystem in the Linux kernel before 3.6.9, when running on
+ hosts that use qemu userspace without XSAVE, allows local users to cause
+ a denial of service (kernel OOPS) by using the KVM_SET_SREGS ioctl to
+ set the X86_CR4_OSXSAVE bit in the guest cr4 register, then calling the
+ KVM_RUN ioctl.
  
  Break-Fix: 2acf923e38fb6a4ce0c57115decbb38d334902ac
  6d1068b3a98519247d8ba4ec85cd40ac136dbdf9

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-armadaxp in Ubuntu.
https://bugs.launchpad.net/bugs/1089604

Title:
  CVE-2012-4461

Status in linux package in Ubuntu:
  Invalid
Status in linux-armadaxp package in Ubuntu:
  Invalid
Status in linux-ec2 package in Ubuntu:
  Invalid
Status in linux-flo package in Ubuntu:
  New
Status in linux-fsl-imx51 package in Ubuntu:
  Invalid
Status in linux-goldfish package in Ubuntu:
  Invalid
Status in linux-lts-backport-maverick package in Ubuntu:
  Invalid
Status in linux-lts-backport-natty package in Ubuntu:
  Invalid
Status in linux-lts-backport-oneiric package in Ubuntu:
  Invalid
Status in linux-lts-quantal package in Ubuntu:
  Invalid
Status in linux-lts-raring package in Ubuntu:
  New
Status in linux-lts-saucy package in Ubuntu:
  New
Status in linux-lts-trusty package in Ubuntu:
  Invalid
Status in linux-lts-utopic package in Ubuntu:
  Invalid
Status in linux-mako package in Ubuntu:
  New
Status in linux-manta 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:
  Invalid
Status in linux-armadaxp source package in Lucid:
  Invalid
Status in linux-ec2 source package in Lucid:
  Invalid
Status in linux-flo source package in Lucid:
  Invalid
Status in linux-fsl-imx51 source package in Lucid:
  Invalid
Status in linux-goldfish source package in Lucid:
  Invalid
Status in linux-lts-backport-maverick source package in Lucid:
  Invalid
Status in linux-lts-backport-natty source package in Lucid:
  Invalid
Status in linux-lts-backport-oneiric source package in Lucid:
  Fix Released
Status in linux-lts-quantal source package in Lucid:
  Invalid
Status in linux-lts-raring source package in Lucid:
  New
Status in linux-lts-saucy source package in Lucid:
  New
Status in linux-lts-trusty source package in Lucid:
  Invalid
Status in linux-lts-utopic source package in Lucid:
  Invalid
Status in linux-mako source package in Lucid:
  Invalid
Status in linux-manta 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-lts-backport-maverick source package in Oneiric:
  Invalid
Status in linux-lts-backport-natty source package in Oneiric:
  Invalid
Status in linux-lts-backport-oneiric source package in Oneiric:
  Invalid
Status in linux source package in Precise:
  Fix Released
Status in linux-armadaxp source package in Precise:
  Fix Released
Status in linux-ec2 source package in Precise:
  Invalid
Status in linux-flo source package in Precise:
  Invalid
Status in linux-fsl-imx51 source package in Precise:
  Invalid
Status in linux-goldfish source package in Precise:
  Invalid
Status in linux-lts-backport-maverick source package in Precise:
  Invalid
Status in linux-lts-backport-natty source package in Precise:
  Invalid
Status in linux-lts-backport-oneiric source package in Precise:
  Invalid
Status in linux-lts-quantal source package in Precise:
  Fix Released
Status in linux-lts-raring source package in Precise:
  New
Status in linux-lts-saucy source package in Precise:
  New
Status in linux-lts-trusty source package in Precise:
  Invalid
Status in linux-lts-utopic source package in Precise:
  Invalid
Status in linux-mako source package in Precise:
  Invalid
Status in linux-manta source package in Precise:
  Invalid
Status in linux-mvl-dove source package in Precise:
  Invalid
Status in linux-ti-omap4 source package in Precise:
  Fix Released
Status in linux-lts-backport-maverick source package in Quantal:
  Invalid
Status in linux-lts-backport-natty source package in Quantal:
  Invalid
Status in linux-lts-backport-oneiric source package in Quantal:
  Invalid
Status in linux-lts-backport-maverick source package in Raring:
  Invalid
Status in linux-lts-backport-natty source package in Raring:
  Invalid
Status in linux-lts-backport-oneiric source package in Raring:
  Invalid
Status in linux source package in Trusty:
  Invalid
Status in linux-armadaxp source package in Trusty:
  Invalid
Status in linux-ec2 source package in Trusty:
  Invalid
Status in linux-flo source package in Trusty:
  Invalid
Status in linux-fsl-imx51 source package in Trusty:
  Invalid
Status in linux-goldfish 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-backport-oneiric source package in Trusty:
  New
Status in linux-lts-quantal source package in Trusty:
  Invalid
Status in linux-lts-raring source package in Trusty:
  New
Status in linux-lts-saucy source package in Trusty:
  New
Status in linux-lts-trusty source package in Trusty:
  Invalid
Status in linux-lts-utopic source package in Trusty:
  Invalid
Status in linux-mako source package in Trusty:
  Invalid
Status in linux-manta 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:
  Invalid
Status in linux-armadaxp source package in Utopic:
  Invalid
Status in linux-ec2 source package in Utopic:
  Invalid
Status in linux-flo source package in Utopic:
  New
Status in linux-fsl-imx51 source package in Utopic:
  Invalid
Status in linux-goldfish 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-backport-oneiric source package in Utopic:
  New
Status in linux-lts-quantal source package in Utopic:
  Invalid
Status in linux-lts-raring source package in Utopic:
  New
Status in linux-lts-saucy source package in Utopic:
  New
Status in linux-lts-trusty source package in Utopic:
  Invalid
Status in linux-lts-utopic source package in Utopic:
  Invalid
Status in linux-mako source package in Utopic:
  New
Status in linux-manta 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:
  Invalid
Status in linux-armadaxp source package in Vivid:
  Invalid
Status in linux-ec2 source package in Vivid:
  Invalid
Status in linux-flo source package in Vivid:
  New
Status in linux-fsl-imx51 source package in Vivid:
  Invalid
Status in linux-goldfish source package in Vivid:
  Invalid
Status in linux-lts-backport-maverick source package in Vivid:
  Invalid
Status in linux-lts-backport-natty source package in Vivid:
  Invalid
Status in linux-lts-backport-oneiric source package in Vivid:
  Invalid
Status in linux-lts-quantal source package in Vivid:
  Invalid
Status in linux-lts-raring source package in Vivid:
  New
Status in linux-lts-saucy source package in Vivid:
  New
Status in linux-lts-trusty source package in Vivid:
  Invalid
Status in linux-lts-utopic source package in Vivid:
  Invalid
Status in linux-mako source package in Vivid:
  New
Status in linux-manta 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
Status in linux-lts-backport-maverick source package in Hardy:
  Invalid
Status in linux-lts-backport-natty source package in Hardy:
  Invalid
Status in linux-lts-backport-oneiric source package in Hardy:
  Invalid

Bug description:
  The KVM subsystem in the Linux kernel before 3.6.9, when running on
  hosts that use qemu userspace without XSAVE, allows local users to
  cause a denial of service (kernel OOPS) by using the KVM_SET_SREGS
  ioctl to set the X86_CR4_OSXSAVE bit in the guest cr4 register, then
  calling the KVM_RUN ioctl.

  Break-Fix: 2acf923e38fb6a4ce0c57115decbb38d334902ac
  6d1068b3a98519247d8ba4ec85cd40ac136dbdf9

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