You might be interested in some previous threads on the topic of Osama bin Laden during the Soviet-Afghan War and the CIA's relationship with the matter:

• Did the mujahideen in Afghanistan meaningfully contribute to the fall of the Soviet Union? - 10 comments, over 4 months old.
• A flaired user initially mistook the question as being about foreign fighters in Afghanistan (such as Osama bin Laden) and gives a broad overview of their role in the conflict.
• Was Osama Bin Laden "recruited, armed, and financed by the CIA" - 13 comments, over 1 year old.
• A flaired user gives a brief summary on the matter with various cited sources that is long enough to be a reading list on the region.
• Some Question on Afghanistan - Are the Taleban and Mujahideen the same? Did America help the Taleban. Did America ever fund Osama Bin Laden? - 6 comments, over 4 months old.
• This post is somewhat tangential to your question but gives a large amount of background knowledge on the relationship between the Mujahedin and the Taliban though it is very light on the topic of Osama bin Laden.

EDIT: Added more threads.