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This question already has an answer here:

I know Android is a modified linux kernel, but does that mean there is any relation between the kernel numbers?

In other words, Is kernel number (for example) 2.6.xx of Android somehow based on or modified from 2.6.xx of Linux? or is it maintained separately?

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marked as duplicate by Izzy, Zuul, t0mm13b, geffchang, Flow Nov 10 '13 at 23:17

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

up vote 1 down vote accepted

Your first guess is correct: an Android kernel is a patched version of the mainstream Linux kernel with the same version number.

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