Linux Distros

Security Oriented Qubes OS 4.0.4 Release

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Qubes OS is a security-oriented, Fedora-based desktop Linux distribution whose main concept is “security by isolation” by using domains implemented as lightweight Xen virtual machines. It attempts to combine two contradictory goals: how to make the isolation between domains as strong as possible, mainly due to clever architecture that minimises the amount of trusted code, and how to make this isolation as seamless and easy as possible.

In includes many updates over the initial 4.0 release, including:

*All 4.0 dom0 updates to date
*Fedora 32 TemplateVM
*Debian 10 TemplateVM
*Whonix 15 Gateway and Workstation TemplateVMs
*Linux kernel 5.4 by default

Qubes 4.0.4 is available to Download;

Qubes-R4.0.4-x86_64.iso (4,959MB, SHA256, signature, torrent, pkglist).


What is a point release?

A point release does not designate a separate, new version of Qubes OS. Rather, it designates its respective major or minor release (in this case, 4.0) inclusive of all updates up to a certain point. Installing Qubes 4.0 and fully updating it results in the same system as installing Qubes 4.0.4.
What should I do?

If you installed Qubes 4.0, 4.0.1, 4.0.2, or 4.0.3 and have fully updated, then your system is already equivalent to a Qubes 4.0.4 installation. No further action is required.

Regardless of your current OS, if you wish to install (or reinstall) Qubes 4.0 for any reason, then the 4.0.4 ISO makes this more convenient and secure, since it bundles all Qubes 4.0 updates to date. Please see the installation guide for detailed instructions.

Thank you to all the release candidate users for testing this release and reporting issues!

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