Mozilla plans to enable GPU sandboxing in Firefox 110 Stable for Windows in February 2023, improving Firefox’s security by applying isolation to GPU processes.

By isolating processes through sandboxing, malware can be cut off from other software and other processes on the device can be protected. Firefox already supports several sandboxes, such as content and socket processes. The FireFox GPU Sandbox has been in development for six years, an important milestone for Mozilla.

GPU Sandbox is currently enabled and tested on Firefox Beta, Developer, and Nightly versions, and the test results show that there are still some problems with this feature. Such as shader cache corruption on some machines. Mozilla hopes to temporarily solve this problem in Firefox 112 by giving the sandboxed GPU process full access to the file system on Windows, and then revoke the full access of the sandboxed GPU process after the problem is completely resolved.

Firefox 110 is scheduled to be released on February 14, 2023.

By configuring the Firefox preference security.sandbox.gpu.level, you can decide whether to enable the GPU sandbox, the value is 0 means disabled, 1 means enabled.Firefox users can check the sandbox status by:

1. Load about:support in your web browser’s address bar, or choose Menu > Help > More Troubleshooting Information.
2. Scroll down to the Sandbox section near the bottom of the page

Firefox lists the status and level of each sandbox, with a higher level meaning a more restrictive sandbox.