A WebGPU shader freezes a Mac until the watchdog panics, and Apple declines to call it a security issue

Sources: primary, discussion
Summary: The writeup shows a WebGPU shader that hangs a Mac until the watchdog brings the machine down. The author reports the effect through Chrome, Firefox and Safari, and states Apple responded in August that it does not consider this a security issue.
Why it matters: Any link a user clicks can take the macOS desktop down across all three browsers, and Apple's response means no fix is scheduled.
Follow-up: Whether Apple or the browser vendors ship a mitigation, such as a shader execution time limit.