Fedora 43 Xen Update DoS Use After Free XSA-480 XSA-481
fedora
March 23, 2026
Use after free of paging structures in EPT [XSA-480, CVE-2026-23554] Xenstored DoS by unprivileged domain [XSA-481, CVE-2026-23555]
Summary
This package contains the XenD daemon and xm command line
tools, needed to manage virtual machines running under the
Xen hypervisor
Update Information:
Use after free of paging structures in EPT [XSA-480, CVE-2026-23554] Xenstored DoS by unprivileged domain [XSA-481, CVE-2026-23555]
Topics Covered
Change Log
* Wed Mar 18 2026 Michael Young
References
Fedora Update Notification FEDORA-2026-8ae1a1c3d7 2026-03-23 01:07:08.010775+00:00 Name : xen Product : Fedora 43 Version : 4.20.2 Release : 4.fc43 URL : https://xenproject.org/ Summary : Xen is a virtual machine monitor Description : This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor
Update Instructions
This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-8ae1a1c3d7' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label
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Name: xen
Product: Fedora 43
Version: 4.20.2
Release: 4.fc43
Summary: Xen is a virtual machine monitor
Topics Covered
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