Most Android vendors lost Linux dist rights, could face shakedown or shutdown
fosspatents.blogspot.com
fosspatents.blogspot.com
There's probably interesting stuff to discuss about what the GPL means in some corner cases and Android vendors compliance, but this is just the latest in a long line of increasingly desperate PR moves in an underhand campaign against Android and should be read in that light.
The trouble is, some Android manufacturers do have a record of not giving access to kernel sources, as Matthew Garrett has documented: those manufacturers really are setting themselves up for trouble down the line if any kernel developer decides to make an example of them.