[LNX2.07] How can I protect my server from the Linux kernel vulnerability that affected servers at the end of 2009?

As you may have read, a vulnerability has recently been identified in all versions of Linux which can lead to malicious users gaining full ("root") access to the affected machine in certain circumstances. This is a highly critical vulnerability as it affects the Linux kernel (the core part of the operating system).

The Red Hat bug report for this issue can be read here.

Unfortunately this may affect the CentOS version of Linux that you are running on your dedicated server.

Here temporary solution you can put in place which we strongly recommend all customers implement.

Solution

Connect to your server using SSH. A free SSH client is available for Windows called PuTTY. You should connect to the IP address of your server as displayed in the Manage Dedicated Servers area.
Make sure you are logged in as the root user.
Run the following commands:
echo "install pppox /bin/true" >> /etc/modprobe.conf
echo "install bluetooth /bin/true" >> /etc/modprobe.conf
rmmod pppox
rmmod bluetooth
If you see any warnings indicating the modules are in use, you should reboot your server to ensure they are unloaded.
shutdown -r now

This fix prevents the vulnerable components of the Linux kernel from being loaded. If you have any difficulties performing the above instructions, please don't hesitate to contact technical support.

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