I've spoken to a Qualcomm engineer about this article. He responded by telling me, in fact, he was one of the engineers that dealt with the issues that highlighted after it was published. He asserted all of those remote-execution holes were addressed, and the article has been a constant pain since because it was never updated to reflect that.
I'm not a close friend of his, but I've met him on multiple occasions and felt confident he was telling the truth.