To exploit this across the internet or LAN, a miscreant needs to reach your CUPS service on UDP port 631. Hopefully none of you have that facing the public internet. The miscreant also has to wait for you to start a print job.
If port 631 isn't directly reachable, an attacker may be able to spoof zeroconf, mDNS, or DNS-SD advertisements to achieve exploitation on a LAN. Details of that path will be disclosed later, we're promised.
In other words, its the SERVER side where the vulnerability lies. Even if Android used CUPS, which it DOES NOT, it certainly doesn't act in the role of a print server.