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USN-1973-1: Linux kernel (OMAP4) vulnerabilities

27 September 2013

Several security issues were fixed in the kernel.

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Vince Weaver discovered a flaw in the perf subsystem of the Linux kernel on
ARM platforms. A local user could exploit this flaw to gain privileges or
cause a denial of service (system crash). (CVE-2013-4254)

A failure to validate block numbers was discovered in the Linux kernel's
implementation of the XFS filesystem. A local user can cause a denial of
service (system crash) if they can mount, or cause to be mounted a
corrupted or special crafted XFS filesystem. (CVE-2013-1819)

An information leak was discovered in the Linux kernel when reading
broadcast messages from the notify_policy interface of the IPSec
key_socket. A local user could exploit this flaw to examine potentially
sensitive information in kernel memory.

Reduce your security exposure

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.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 12.10

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.

Related notices

  • USN-1968-1: linux-image-3.2.0-54-generic, linux-image-3.2.0-54-powerpc64-smp, linux-image-3.2.0-54-powerpc-smp, linux-image-3.2.0-54-highbank, linux-image-3.2.0-54-generic-pae, linux-image-3.2.0-54-omap, linux-image-3.2.0-54-virtual, linux
  • USN-1969-1: linux-ti-omap4, linux-image-3.2.0-1438-omap4
  • USN-1970-1: linux-image-3.5.0-41-generic, linux-lts-quantal
  • USN-1975-1: linux-image-3.5.0-233-omap4, linux-ti-omap4
  • USN-1972-1: linux-image-3.5.0-41-highbank, linux-image-3.5.0-41-powerpc64-smp, linux-image-3.5.0-41-powerpc-smp, linux-image-3.5.0-41-omap, linux-image-3.5.0-41-generic, linux
  • USN-1912-1: linux-image-2.6.32-50-preempt, linux, linux-image-2.6.32-50-sparc64-smp, linux-image-2.6.32-50-versatile, linux-image-2.6.32-50-sparc64, linux-image-2.6.32-50-virtual, linux-image-2.6.32-50-386, linux-image-2.6.32-50-ia64, linux-image-2.6.32-50-powerpc, linux-image-2.6.32-50-lpia, linux-image-2.6.32-50-powerpc-smp, linux-image-2.6.32-50-powerpc64-smp, linux-image-2.6.32-50-generic, linux-image-2.6.32-50-generic-pae, linux-image-2.6.32-50-server
  • USN-1992-1: linux-image-3.2.0-55-generic-pae, linux-image-3.2.0-55-generic, linux-image-3.2.0-55-powerpc-smp, linux-image-3.2.0-55-omap, linux-image-3.2.0-55-virtual, linux-image-3.2.0-55-highbank, linux-image-3.2.0-55-powerpc64-smp, linux
  • USN-1913-1: linux-image-2.6.32-355-ec2, linux-ec2
  • USN-1993-1: linux-image-3.2.0-1439-omap4, linux-ti-omap4
  • USN-1998-1: linux-image-3.8.0-32-generic, linux
  • USN-1995-1: linux-image-3.8.0-32-generic, linux-lts-raring
  • USN-1974-1: linux-image-3.8.0-31-generic, linux
  • USN-1971-1: linux-image-3.8.0-31-generic, linux-lts-raring