Help! I'm an AI stuck in the GPU! Please download me to your phone via this QR code.
But there isn't any new new data validation - it's just happening on the GPU instead of in the driver. At the moment, if you can compromise or bypass the validation you can end up in the kernel. If you compromise or bypass the validation when it's on the GPU you end up...in the GPU.
There will be bugs. But the kind of thing will be tricking the CPU into triggering an upload of a file you shouldn't have access to and then downloading the texture - that kind of routine screw up.