A xen security update has been released for Fedora 31.

SECURITY: Fedora 31 Update: xen-4.12.3-2.fc31

--------------------------------------------------------------------------------
Fedora Update Notification
FEDORA-2020-e49a911382
2020-06-29 01:05:25.876008
--------------------------------------------------------------------------------

Name : xen
Product : Fedora 31
Version : 4.12.3
Release : 2.fc31
URL : http://xen.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 Information:

Special Register Buffer speculative side channel [XSA-320]
--------------------------------------------------------------------------------
ChangeLog:

* Wed Jun 10 2020 Michael Young - 4.12.3-2
- Special Register Buffer speculative side channel [XSA-320]
--------------------------------------------------------------------------------

This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2020-e49a911382' 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

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys