I've just had the following in a mail from my hosting company..
it has come to our attention that your server may be susceptable to a linux kernel vulnerability. This vulberability can lead to a root (administrative) compromise of the server.
Details of this vulnerability can be found here:
I've tried running 'yum update kernel' but there isn't a new one available. Am I right in thinking that the packages come from your server?
Looking at dmesg I see a kernel version of 2.6.17-1.2142_FC4. Is this affected by the above vulnerability?