USN-1412-1: Linux kernel vulnerability

Ubuntu Security Notice USN-1412-1

29th March, 2012

linux vulnerability

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

  • Ubuntu 11.10

Summary

Several security issues were fixed in the kernel.

Software description

  • linux - Linux kernel

Details


Somnath Kotur discovered an error in the Linux kernel's VLAN (virtual lan)
and be2net drivers. An attacker on the local network could exploit this
flaw to cause a denial of service.

Update instructions

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

Ubuntu 11.10:
linux-image-3.0.0-17-powerpc-smp 3.0.0-17.30
linux-image-3.0.0-17-generic 3.0.0-17.30
linux-image-3.0.0-17-virtual 3.0.0-17.30
linux-image-3.0.0-17-generic-pae 3.0.0-17.30
linux-image-3.0.0-17-omap 3.0.0-17.30
linux-image-3.0.0-17-powerpc64-smp 3.0.0-17.30
linux-image-3.0.0-17-server 3.0.0-17.30
linux-image-3.0.0-17-powerpc 3.0.0-17.30

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

CVE-2011-3347