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Firefox 84.0 Update Provides Native Silicon M1 Support

Nadia Ali

| 5 days ago


Firefox is a popular free and open-source web browser created by the Mozilla Foundation and the Mozilla Corporation.

Today, December 15, Mozilla's Firefox web browser just released its version 84.0 update, which consists of native support for the Apple Silicon M1.

Along with this new support, Firefox also revealed that this update would be the final version that will support Flash along with this new support.

Mozilla Firefox 84.0 comes after expressing praise for Apple's iOS 14 security system, thus inspiring Mozilla to release 84.0 for macOS Big Sur and Apple Silicon M1.

New Features

As stated in Firefox's official release notes found on their website, this native support allows for a big change in performance in speed and responsiveness.

Specifically, Firefox launches over 2.5 times faster and as expressed via the SpeedoMeter 2.0 test, web apps launch and respond twice as fast to user commands.

Also, Firefox states:

WebRender rolls out to MacOS Big Sur, Windows devices with Intel Gen 6 GPUs, and Intel laptops running Windows 7 and 8. Additionally, we'll ship an accelerated rendering pipeline for Linux/GNOME/X11 users for the first time, ever!

Firefox currently uses more "modern techniques" as they describe, to appropriate shared memory on Linux. This greatly optimizes performance and strengthens the compatibility with Docker.



Bugs that were fixed in this latest version were the WebsiteFilter failing to block viewing the blocked websites' source (bug 1465847).

Moreover, if users received an error message while installing an extension, they would not be able to install other extensions (bug 1674006). Lastly, when using Windows, the uninstaller failed to ask users for UAC permission, which was also fixed (bug 1639613).

Some additional vulnerabilities from the last version include the operations on a BigInt which could have caused uninitialized memory to be exposed, due to the backing store not being properly cleared.

The heap buffer overflow in WebGL caused by certain blit values not being properly constrained was also tended to, along with fixing the CSS Sanitizer, which was performing incorrect actions. Another glitch that was fixed was when entering an address into the search bars.

The website had the ability to redirect the user before being navigated to the desired URL—this no longer happens.

To get Firefox 84.0, you can download it from their official website. Mozilla has emphasized that they have maintained their intended schedule of releasing a new Firefox each month for the duration of 2020, despite the pandemic.

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