That’s something different: that’s just a straight-up bug in the driver or compositor, directly allowing access to the graphics memory of other programs. It’s s

That’s something different: that’s just a straight-up bug in the driver or compositor, directly allowing access to the graphics memory of other programs. It’s stupid that such bugs occur, but occur they do. GPU drivers especially have historically been mindbogglingly badly implemented, though most of the worst problems are fully ironed out now. But what’s being reported here is far more subtle, a side-channel attack based on data compression.