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Qubes Canary 047
We have published Qubes Canary 047. 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 047 ---===[ Qube...
Qubes OS 4.3.1-rc1 is available for testing
https://www.qubes-os.org/news/2026/05/28/qubes-os-4-3-1-rc1-available-for-testing/
The first release candidate (RC) for Qubes OS 4.3.1 is now available for testing. This patch release aims to consolidate all the security patches, bug fixes, and other updates that have occurred since the release of Qubes 4.3.0. What’s new in Qubes 4.3.1? Default Fedora template upgrade...
QSB-114: Intel CPU data exposure vulnerability
We have published Qubes Security Bulletin (QSB) 114: Intel CPU data exposure vulnerability. 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 Bul...
XSAs released on 2026-05-12
https://www.qubes-os.org/news/2026/05/13/xsas-released-on-2026-05-12/
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-490 See QSB-113 XSAs that DO NOT affect the security of Qubes OS The fol...
QSB-113: AMD CPU Opcode Cache corruption (XSA-490)
We have published Qubes Security Bulletin (QSB) 113: AMD CPU Opcode Cache corruption (XSA-490). 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...
@debian 12 (Bookworm) approaching end of life
https://www.qubes-os.org/news/2026/05/06/debian-12-bookworm-approaching-end-of-life/
Debian 12 (Bookworm) is currently scheduled to reach end-of-life (EOL) on 2026-06-10 (approximately one month from the date of this announcement). Please upgrade all of your Debian templates and standalones by that date. For more information, see Upgrading to avoid EOL. There are two wa...
XSAs released on 2026-04-28
https://www.qubes-os.org/news/2026/04/28/xsas-released-on-2026-04-28/
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 following XS...
Qubes OS 4.2 approaching end of life
https://www.qubes-os.org/news/2026/04/27/qubes-os-4-2-approaching-end-of-life/
Qubes OS 4.2 is scheduled to reach end-of-life (EOL) on 2026-06-21, approximately two months from the date of this announcement. Recommended actions If you’re currently using Qubes 4.2, you should upgrade to Qubes 4.3 no later than 2026-06-21. There are two ways to upgrade: Perform a cl...
XSAs released on 2026-04-17
https://www.qubes-os.org/news/2026/04/19/xsas-released-on-2026-04-17/
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-488 See QSB-112 XSAs that DO NOT affect the security of Qubes OS The fol...
QSB-112: Floating Point Divider State Sampling (XSA-488)
We have published Qubes Security Bulletin (QSB) 112: Floating Point Divider State Sampling (XSA-488). 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 Se...