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[Bug 1191918] Re: CVE-2013-1943

 

** Description changed:

- A missing sanity check was found in the kvm_set_memory_region() function
- in KVM, allowing a user-space process to register memory regions
- pointing to the kernel address space. A local, unprivileged user could
- use this flaw to escalate their privileges.
+ The KVM subsystem in the Linux kernel before 3.0 does not check whether
+ kernel addresses are specified during allocation of memory slots for use
+ in a guest's physical address space, which allows local users to gain
+ privileges or obtain sensitive information from kernel memory via a
+ crafted application, related to arch/x86/kvm/paging_tmpl.h and
+ virt/kvm/kvm_main.c.
  
  Break-Fix: - fa3d315a4ce2c0891cdde262562e710d95fba19e
  Break-Fix: - 9e3bb6b6f6a0c535eb053fbf0005a8e79e053374

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https://bugs.launchpad.net/bugs/1191918

Title:
  CVE-2013-1943

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-fsl-imx51” 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:
  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:
  Invalid
Status in “linux-lts-backport-natty” source package in Lucid:
  Invalid
Status in “linux-lts-backport-oneiric” source package in Lucid:
  Invalid
Status in “linux-lts-quantal” source package in Lucid:
  Invalid
Status in “linux-lts-raring” 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:
  Invalid
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:
  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 Committed
Status in “linux-lts-raring” 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:
  Fix Committed
Status in “linux” source package in Quantal:
  Fix Committed
Status in “linux-armadaxp” source package in Quantal:
  Invalid
Status in “linux-ec2” source package in Quantal:
  Invalid
Status in “linux-fsl-imx51” source package in Quantal:
  Invalid
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-quantal” source package in Quantal:
  Invalid
Status in “linux-lts-raring” source package in Quantal:
  Invalid
Status in “linux-mvl-dove” source package in Quantal:
  Invalid
Status in “linux-ti-omap4” source package in Quantal:
  Fix Committed
Status in “linux” source package in Raring:
  Fix Committed
Status in “linux-armadaxp” source package in Raring:
  Invalid
Status in “linux-ec2” source package in Raring:
  Invalid
Status in “linux-fsl-imx51” source package in Raring:
  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-lts-quantal” source package in Raring:
  Invalid
Status in “linux-lts-raring” source package in Raring:
  Invalid
Status in “linux-mvl-dove” source package in Raring:
  Invalid
Status in “linux-ti-omap4” source package in Raring:
  Fix Committed
Status in “linux” source package in Saucy:
  Invalid
Status in “linux-armadaxp” source package in Saucy:
  Invalid
Status in “linux-ec2” source package in Saucy:
  Invalid
Status in “linux-fsl-imx51” source package in Saucy:
  Invalid
Status in “linux-lts-backport-maverick” source package in Saucy:
  Invalid
Status in “linux-lts-backport-natty” source package in Saucy:
  Invalid
Status in “linux-lts-backport-oneiric” source package in Saucy:
  Invalid
Status in “linux-lts-quantal” source package in Saucy:
  Invalid
Status in “linux-lts-raring” source package in Saucy:
  Invalid
Status in “linux-mvl-dove” source package in Saucy:
  Invalid
Status in “linux-ti-omap4” source package in Saucy:
  Invalid

Bug description:
  The KVM subsystem in the Linux kernel before 3.0 does not check
  whether kernel addresses are specified during allocation of memory
  slots for use in a guest's physical address space, which allows local
  users to gain privileges or obtain sensitive information from kernel
  memory via a crafted application, related to
  arch/x86/kvm/paging_tmpl.h and virt/kvm/kvm_main.c.

  Break-Fix: - fa3d315a4ce2c0891cdde262562e710d95fba19e
  Break-Fix: - 9e3bb6b6f6a0c535eb053fbf0005a8e79e053374

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