Linux Kernel Vulnerability: know your version!

By John Swindells 04 Oct 2010 | Comment
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An exceptional vulnerability has been detected in the Linux kernel, which allows any non-root user to gain super-user privileges. One would normally assume that the user needs SSH access, making the attack limited in scope - but in this case, it is possible to force non-terminal users such as apache to perform the exploit. The exploit is extremely nasty, and web hosts around the globe are working hard to update their systems.

If you are running your own dedicated server, the number one thing you need to know is the kernel version currently running. To find it out, run this command:

uname -r

If you have a version less than 2.6.18-194.11.4 then you must upgrade your kernel! Follow the sys-admin instructions for your own server to do this. Note that you MUST reboot after a kernel upgrade!

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