[USN-1610-1] Linux kernel vulnerability

John Johansen john.johansen at canonical.com
Fri Oct 12 10:16:20 UTC 2012

Ubuntu Security Notice USN-1610-1
October 12, 2012

linux vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.04 LTS


The system could be made to perform privileged actions as an administrator.

Software Description:
- linux: Linux kernel


Pablo Neira Ayuso discovered a flaw in the credentials of netlink messages.
An unprivileged local attacker could exploit this by getting a netlink
based service, that relies on netlink credentials, to perform privileged

Update instructions:

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

Ubuntu 12.04 LTS:
  linux-image-3.2.0-32-generic    3.2.0-32.51
  linux-image-3.2.0-32-generic-pae  3.2.0-32.51
  linux-image-3.2.0-32-highbank   3.2.0-32.51
  linux-image-3.2.0-32-omap       3.2.0-32.51
  linux-image-3.2.0-32-powerpc-smp  3.2.0-32.51
  linux-image-3.2.0-32-powerpc64-smp  3.2.0-32.51
  linux-image-3.2.0-32-virtual    3.2.0-32.51

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.


Package Information:

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