At what point was it presented to you with evidence? I also remember hearing this often around 2001, but I can't recall any specifics showing the link.
Frankly, the CIA deserves the blame even if they didn't specifically assist Bin Laden. They certainly assisted many other people that were equally terrible, and their actions led to the instability that allowed such groups to flourish.
How does this show any link to the CIA? He was the son of a billionaire, I doubt he would need help from a spy agency to get a puff piece written on page ten.