USN-1919-1: Linux kernel vulnerability

29 July 2013

The system could be made to crash or run programs as an administrator.



  • linux - Linux kernel


Kees Cook discovered a format string vulnerability in the Broadcom B43
wireless driver for the Linux kernel. A local user could exploit this flaw
to gain administrative privileges. (CVE-2013-2852)

Marcus Moeller and Ken Fallon discovered that the CIFS incorrectly built
certain paths. A local attacker with access to a CIFS partition could
exploit this to crash the system, leading to a denial of service.

Update instructions

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

Ubuntu 13.04

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-1915-1: linux-lts-quantal, linux-image-3.5.0-37-generic
  • USN-1920-1: linux-ti-omap4, linux-image-3.5.0-229-omap4
  • USN-1914-1: linux-image-3.2.0-51-omap, linux-image-3.2.0-51-virtual, linux-image-3.2.0-51-powerpc64-smp, linux, linux-image-3.2.0-51-generic-pae, linux-image-3.2.0-51-powerpc-smp, linux-image-3.2.0-51-highbank, linux-image-3.2.0-51-generic
  • USN-1899-1: linux-image-2.6.32-49-ia64, linux-image-2.6.32-49-generic, linux-image-2.6.32-49-powerpc-smp, linux-image-2.6.32-49-powerpc64-smp, linux-image-2.6.32-49-powerpc, linux-image-2.6.32-49-versatile, linux-image-2.6.32-49-server, linux, linux-image-2.6.32-49-preempt, linux-image-2.6.32-49-sparc64, linux-image-2.6.32-49-generic-pae, linux-image-2.6.32-49-386, linux-image-2.6.32-49-lpia, linux-image-2.6.32-49-virtual, linux-image-2.6.32-49-sparc64-smp
  • USN-1930-1: linux-ti-omap4, linux-image-3.2.0-1436-omap4
  • USN-1900-1: linux-image-2.6.32-354-ec2, linux-ec2
  • USN-1917-1: linux-image-3.5.0-37-highbank, linux-image-3.5.0-37-powerpc64-smp, linux-image-3.5.0-37-generic, linux, linux-image-3.5.0-37-powerpc-smp, linux-image-3.5.0-37-omap
  • USN-1918-1: linux-ti-omap4, linux-image-3.5.0-229-omap4
  • USN-1936-1: linux-image-3.8.0-29-generic, linux-lts-raring