The subject is the same as the source.
Wait so the number of security vulnerabilities is not related to security?
Or are you saying the number of Linux Kernel v2.6.x vulnerabilities are not related to the security of all the distributions that use this Kernel?
Or are you trying to use the ridiculous number of Linux distributions as some sort of excuse for not relating them to the vulnerabilities in the Kernel?
It sounds like you are making excuses for something very obvious.