1. Ubuntu Security Notices
  2. USN-1914-1

USN-1914-1: Linux kernel vulnerability

Publication date

29 July 2013

Overview

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

Releases

Packages

Details

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.

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.

Update instructions

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

Learn more about how to get the fixes.

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.

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

Ubuntu Release Package Version
12.04 precise linux-image-3.2.0-51-omap –  3.2.0-51.77
linux-image-3.2.0-51-powerpc64-smp –  3.2.0-51.77
linux-image-3.2.0-51-highbank –  3.2.0-51.77
linux-image-3.2.0-51-generic –  3.2.0-51.77
linux-image-3.2.0-51-virtual –  3.2.0-51.77
linux-image-3.2.0-51-generic-pae –  3.2.0-51.77
linux-image-3.2.0-51-powerpc-smp –  3.2.0-51.77

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References

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