The Deathray: A simple way for an untrusted site to freeze a Mac
Summary
A macOS-specific vulnerability where a WebGPU shader from an untrusted site can freeze the Mac UI, potentially forcing a restart. The post discusses cross-browser impact on macOS, references ShadyShader and CVE-2023-40441, Apple’s response, and architectural challenges around GPU pre-emption on Apple Silicon, along with disclosure history and suggested mitigations.