Official Website Qubes OS
Qubes OS is a free and open-source, security-oriented operating system for single-user desktop computing. Qubes OS leverages Xen-based virtualization to allow for the creation and management of isolated compartments called qubes.
14 August
QSB-109: Intel microcode updates
We have published Qubes Security Bulletin (QSB) 109: Intel microcode updates. The text of this QSB and its accompanying cryptographic signatures are reproduced below, followed by a general explanation of this announcement and authentication instructions. Qubes Security (…)
10 August
Qubes OS 4.3.0-rc1 is available for testing
We’re pleased to announce that the first release candidate (RC) for Qubes OS 4.3.0 is now available for testing. This minor release includes many new features and improvements over Qubes OS 4.2. What’s new in Qubes 4.3? Dom0 upgraded to Fedora 41 (#9402). Xen upgraded to (…)
26 July
New Fedora 42 templates are now available for Qubes OS 4.2 in standard, minimal, and Xfce varieties. There are two ways to upgrade a template to a new Fedora release: Recommended: Install a fresh template to replace an existing one. This option is simpler for less (…)
23 July
The Qubes documentation is migrating to Read the Docs!
We’re pleased to announce that we’re officially migrating to Read the Docs as our documentation generation and hosting platform. Our documentation source files will continue to reside in the qubes-doc Git repository with PGP-signed tags and commits, and the live documentation (…)
17 July
Qubes OS Summit 2025: Tickets for sale and Call for Participation open!
You can now purchase on-site tickets to attend Qubes OS Summit 2025 in person! Please note that a limited number of on-site tickets are available, and tickets are more heavily discounted the earlier they’re purchased. For those who would prefer to participate remotely (…)
11 July
The Xen Project has released one or more Xen security advisories (XSAs). The security of Qubes OS is affected. XSAs that DO affect the security of Qubes OS The following XSAs do affect the security of Qubes OS: XSA-471 See QSB-108 XSAs that DO NOT affect the security of (…)
11 July
QSB-108: Transitive Scheduler Attacks (XSA-471)
We have published Qubes Security Bulletin (QSB) 108: Transitive Scheduler Attacks (XSA-471). The text of this QSB and its accompanying cryptographic signatures are reproduced below, followed by a general explanation of this announcement and authentication instructions. Qubes (…)
8 July
Qubes OS Summit 2025: Call for sponsors
The Qubes OS Project and 3mdeb are excited to announce the upcoming Qubes OS Summit 2025! This event will be an incredible opportunity for the community to come together, share knowledge, and discuss the future of secure computing. Event Details: Date: Fri, Sep 26, 2025 (…)
1 July
The Xen Project has released one or more Xen security advisories (XSAs). The security of Qubes OS is not affected. XSAs that DO affect the security of Qubes OS The following XSAs do affect the security of Qubes OS: (none) XSAs that DO NOT affect the security of Qubes OS The (…)
4 June
We have published Qubes Canary 043. The text of this canary and its accompanying cryptographic signatures are reproduced below. For an explanation of this announcement and instructions for authenticating this canary, please see the end of this announcement. Qubes Canary 043 (…)
