XSA-268, XSA-269, XSA-271, and XSA-272 do not affect the security of Qubes OS
Dear Qubes Community,
The Xen Project has published Xen Security Advisories 268, 269, 271, and 272 (XSA-268, XSA-269, XSA-271, and XSA-272, respectively). These XSAs do not affect the security of Qubes OS, and no user action is necessary.
These XSAs have been added to the XSA Tracker:
https://www.qubes-os.org/security/xsa/#268
https://www.qubes-os.org/security/xsa/#269
https://www.qubes-os.org/security/xsa/#271
https://www.qubes-os.org/security/xsa/#272