USN-1825-1: Linux kernel vulnerability

16 May 2013

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

Releases

Packages

  • linux - Linux kernel

Details

An flaw was discovered in the Linux kernel's perf_events interface. A local
user could exploit this flaw to escalate privileges on the system.

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-1826-1: linux-image-3.5.0-30-omap, linux-image-3.5.0-30-powerpc-smp, linux-image-3.5.0-30-powerpc64-smp, linux-image-3.5.0-30-highbank, linux-image-3.5.0-30-generic, linux
  • USN-1827-1: linux-image-3.8.0-21-generic, linux
  • USN-1828-1: linux-image-3.5.0-30-generic, linux-lts-quantal
  • USN-1836-1: linux-ti-omap4, linux-image-3.5.0-225-omap4
  • USN-1838-1: linux-ti-omap4, linux-image-3.5.0-225-omap4
  • USN-1839-1: linux-ti-omap4, linux-image-3.2.0-1432-omap4
  • USN-1849-1: linux-image-3.8.0-23-generic, linux-lts-raring