Technology
Researcher reports WebGPU flaw that freezes Mac desktops across browsers
Researcher Auberon López reports that a webpage using WebGPU can freeze the desktop on M-series MacBooks running macOS Tahoe, with reproduction in Chrome, Firefox and Safari. A looping GPU workload blocks dependent graphics work and reportedly leaves WindowServer unresponsive until restart. The account exposes a browser-to-desktop availability problem, although it does not demonstrate code execution or a data breach. López says Apple reproduced the issue but subsequently declined to classify it as a security issue.
Editorial summary · Publisher article
What matters
- Testing described in the report covers M-series MacBooks running Tahoe; other Mac configurations remain unconfirmed.
- The researcher reports that remote SSH access still works while the desktop is frozen.
- A watchdog can trigger a kernel panic and restart after WindowServer stops responding.
- López reports disclosure to Apple on July 27 and a changed classification on August 26.
Context & caveats
- Reproduction results and Apple’s responses are reported by the discoverer; the packet contains no independent verification.
- The supplied account does not establish an available fix.
Why this made the edition
The discoverer provides a specific reproduction scope, technical mechanism, disclosure chronology and explicit limits on severity and testing.
Source material