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USN-1473-1: Linux kernel vulnerabilities

13 June 2012

Several security issues were fixed in the kernel.

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Releases

Packages

Details

A flaw was discovered in the Linux kernel's KVM (kernel virtual machine).
An administrative user in the guest OS could leverage this flaw to cause a
denial of service in the host OS. (CVE-2012-2121)

Schacher Raindel discovered a flaw in the Linux kernel's memory handling
when hugetlb is enabled. An unprivileged local attacker could exploit this
flaw to cause a denial of service and potentially gain higher privileges.
(CVE-2012-2133)

Stephan Mueller reported a flaw in the Linux kernel's dl2k network driver's
handling of ioctls. An unprivileged local user could leverage this flaw to
cause a denial of service. (CVE-2012-2313)

Timo Warns reported multiple flaws in the Linux kernel's hfsplus
filesystem. An unprivileged local user could exploit these flaws to gain
root system priviliges. (CVE-2012-2319)

Xi Wang discovered a flaw in the Linux kernel's i915 graphics driver
handling of cliprect on 32 bit systems. An unprivileged local attacker
could leverage this flaw to cause a denial of service or potentially gain
root privileges. (CVE-2012-2383)

Xi Wang discovered a flaw in the Linux kernel's i915 graphics driver
handling of buffer_count on 32 bit systems. An unprivileged local attacker
could leverage this flaw to cause a denial of service or potentially gain
root privileges. (CVE-2012-2384)

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 12.04

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References

Related notices

  • USN-1474-1: linux-ti-omap4, linux-image-3.2.0-1414-omap4
  • USN-1457-1: linux-image-2.6.38-15-virtual, linux-image-2.6.38-15-omap, linux-image-2.6.38-15-versatile, linux-image-2.6.38-15-powerpc64-smp, linux-image-2.6.38-15-generic, linux-image-2.6.38-15-powerpc, linux-image-2.6.38-15-powerpc-smp, linux-image-2.6.38-15-generic-pae, linux, linux-image-2.6.38-15-server
  • USN-1476-1: linux-ti-omap4, linux-image-3.0.0-1211-omap4
  • USN-1470-1: linux-lts-backport-natty, linux-image-2.6.38-15-virtual, linux-image-2.6.38-15-generic, linux-image-2.6.38-15-generic-pae, linux-image-2.6.38-15-server
  • USN-1472-1: linux-image-3.0.0-21-omap, linux-image-3.0.0-21-virtual, linux-image-3.0.0-21-server, linux-image-3.0.0-21-generic, linux, linux-image-3.0.0-21-generic-pae, linux-image-3.0.0-21-powerpc-smp, linux-image-3.0.0-21-powerpc64-smp, linux-image-3.0.0-21-powerpc
  • USN-2037-1: linux-ec2, linux-image-2.6.32-359-ec2
  • USN-1471-1: linux-image-3.0.0-21-virtual, linux-image-3.0.0-21-server, linux-image-3.0.0-21-generic, linux-lts-backport-oneiric, linux-image-3.0.0-21-generic-pae
  • USN-1577-1: linux-ti-omap4, linux-image-2.6.38-1209-omap4
  • USN-2036-1: linux-image-2.6.32-54-server, linux-image-2.6.32-54-386, linux-image-2.6.32-54-generic-pae, linux-image-2.6.32-54-generic, linux-image-2.6.32-54-sparc64, linux-image-2.6.32-54-virtual, linux-image-2.6.32-54-ia64, linux-image-2.6.32-54-sparc64-smp, linux-image-2.6.32-54-powerpc64-smp, linux-image-2.6.32-54-powerpc, linux-image-2.6.32-54-preempt, linux, linux-image-2.6.32-54-powerpc-smp, linux-image-2.6.32-54-versatile, linux-image-2.6.32-54-lpia
  • USN-1469-1: linux-image-2.6.32-345-ec2, linux-ec2
  • USN-1468-1: linux-image-2.6.32-41-preempt, linux-image-2.6.32-41-generic-pae, linux-image-2.6.32-41-386, linux-image-2.6.32-41-ia64, linux-image-2.6.32-41-sparc64, linux-image-2.6.32-41-lpia, linux-image-2.6.32-41-powerpc-smp, linux-image-2.6.32-41-sparc64-smp, linux-image-2.6.32-41-generic, linux-image-2.6.32-41-server, linux-image-2.6.32-41-powerpc, linux, linux-image-2.6.32-41-versatile, linux-image-2.6.32-41-virtual, linux-image-2.6.32-41-powerpc64-smp
  • USN-1491-1: linux-image-2.6.32-345-ec2, linux-ec2
  • USN-1493-1: linux-image-2.6.24-31-powerpc, linux-image-2.6.24-31-hppa64, linux-image-2.6.24-31-generic, linux-image-2.6.24-31-rt, linux-image-2.6.24-31-server, linux-image-2.6.24-31-xen, linux-image-2.6.24-31-mckinley, linux-image-2.6.24-31-openvz, linux-image-2.6.24-31-386, linux-image-2.6.24-31-sparc64, linux-image-2.6.24-31-lpia, linux, linux-image-2.6.24-31-powerpc-smp, linux-image-2.6.24-31-virtual, linux-image-2.6.24-31-sparc64-smp, linux-image-2.6.24-31-powerpc64-smp, linux-image-2.6.24-31-lpiacompat, linux-image-2.6.24-31-hppa32, linux-image-2.6.24-31-itanium
  • USN-1490-1: linux-lts-backport-natty, linux-image-2.6.38-15-virtual, linux-image-2.6.38-15-generic, linux-image-2.6.38-15-generic-pae, linux-image-2.6.38-15-server
  • USN-1492-1: linux-image-2.6.32-41-preempt, linux-image-2.6.32-41-generic-pae, linux-image-2.6.32-41-386, linux-image-2.6.32-41-ia64, linux-image-2.6.32-41-sparc64, linux-image-2.6.32-41-lpia, linux-image-2.6.32-41-powerpc-smp, linux-image-2.6.32-41-sparc64-smp, linux-image-2.6.32-41-generic, linux-image-2.6.32-41-server, linux-image-2.6.32-41-powerpc, linux, linux-image-2.6.32-41-versatile, linux-image-2.6.32-41-virtual, linux-image-2.6.32-41-powerpc64-smp
  • USN-1488-1: linux-image-2.6.38-15-virtual, linux-image-2.6.38-15-omap, linux-image-2.6.38-15-versatile, linux-image-2.6.38-15-powerpc64-smp, linux-image-2.6.38-15-generic, linux-image-2.6.38-15-powerpc, linux-image-2.6.38-15-powerpc-smp, linux-image-2.6.38-15-generic-pae, linux, linux-image-2.6.38-15-server
  • USN-1530-1: linux-ti-omap4, linux-image-2.6.38-1209-omap4

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