Insecure Kernel

I just got a brand new server and I got this message in WHM:

You are running an insecure kernel (2.4.20-8). You should upgrade to a newer version as soon as possible to avoid your system being compromised. https://rhn.redhat.com/errata/RHSA-2003-417.html

How would I go about updating?

Thanks Insecure Kernel

 

 

 

 

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