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USN-2018-1: Linux kernel (OMAP4) vulnerabilities

8 November 2013

Several security issues were fixed in the kernel.

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Releases

Packages

Details

A denial of service flaw was discovered in the Btrfs file system in the
Linux kernel. A local user could cause a denial of service by creating a
large number of files with names that have the same CRC32 hash value.
(CVE-2012-5374)

A denial of service flaw was discovered in the Btrfs file system in the
Linux kernel. A local user could cause a denial of service (prevent file
creation) for a victim, by creating a file with a specific CRC32C hash
value in a directory important to the victim. (CVE-2012-5375)

Dan Carpenter discovered an information leak in the HP Smart Array and
Compaq SMART2 disk-array driver in the Linux kernel. A local user could
exploit this flaw to obtain sensitive information from kernel memory.
(CVE-2013-2147)

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 12.04

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.

Related notices

  • USN-2017-1: linux-image-3.2.0-56-generic-pae, linux-image-3.2.0-56-omap, linux-image-3.2.0-56-highbank, linux-image-3.2.0-56-powerpc64-smp, linux-image-3.2.0-56-powerpc-smp, linux-image-3.2.0-56-generic, linux, linux-image-3.2.0-56-virtual
  • USN-1947-1: linux-lts-quantal, linux-image-3.5.0-40-generic
  • USN-1946-1: linux-ti-omap4, linux-image-3.5.0-232-omap4
  • USN-1944-1: linux-image-3.5.0-40-highbank, linux-image-3.5.0-40-powerpc-smp, linux-image-3.5.0-40-generic, linux, linux-image-3.5.0-40-powerpc64-smp, linux-image-3.5.0-40-omap
  • USN-1945-1: linux-ti-omap4, linux-image-3.5.0-232-omap4
  • USN-2023-1: linux, linux-image-3.8.0-33-generic
  • USN-2020-1: linux-image-3.8.0-33-generic, linux-lts-raring
  • USN-1999-1: linux-ti-omap4, linux-image-3.5.0-234-omap4
  • USN-1994-1: linux-image-3.5.0-42-generic, linux-lts-quantal
  • USN-1996-1: linux-image-3.5.0-42-omap, linux-image-3.5.0-42-powerpc-smp, linux-image-3.5.0-42-powerpc64-smp, linux-image-3.5.0-42-generic, linux, linux-image-3.5.0-42-highbank
  • USN-2016-1: linux-image-2.6.32-358-ec2, linux-ec2
  • USN-2015-1: linux-image-2.6.32-53-powerpc, linux-image-2.6.32-53-powerpc-smp, linux-image-2.6.32-53-powerpc64-smp, linux-image-2.6.32-53-server, linux-image-2.6.32-53-generic-pae, linux-image-2.6.32-53-386, linux-image-2.6.32-53-ia64, linux-image-2.6.32-53-lpia, linux-image-2.6.32-53-versatile, linux-image-2.6.32-53-virtual, linux-image-2.6.32-53-sparc64-smp, linux-image-2.6.32-53-sparc64, linux, linux-image-2.6.32-53-generic, linux-image-2.6.32-53-preempt
  • USN-2050-1: linux-image-3.5.0-236-omap4, linux-ti-omap4
  • USN-1997-1: linux-ti-omap4, linux-image-3.5.0-234-omap4