The only connection between the infotainment system and your brakes is over the CAN bus, nothing happening on the infotainment should affect braking.
The other 50% is my incredulity that someone thought putting JVM in more real-world products is a good idea.
You surely must recognize that having any connection whatsoever between an automotive control network and an onboard infotainment system represents a potential attack vector, right? There are countless low-hanging fruit already on the market as far as automotive hacks, and this simply will enrich that supply...