A xen security update has been released for Fedora 31.

SECURITY: Fedora 31 Update: xen-4.12.3-4.fc31

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Fedora Update Notification
FEDORA-2020-3689b67b53
2020-09-10 17:33:51.795792
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Name : xen
Product : Fedora 31
Version : 4.12.3
Release : 4.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

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Update Information:

QEMU: usb: out-of-bounds r/w access issue [XSA-335, CVE-2020-14364] (#1871850)
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ChangeLog:

* Tue Aug 25 2020 Michael Young - 4.12.3-4
- QEMU: usb: out-of-bounds r/w access issue [XSA-335, CVE-2020-14364]
(#1871850)
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References:

[ 1 ] Bug #1869201 - CVE-2020-14364 QEMU: usb: out-of-bounds r/w access issue while processing usb packets
  https://bugzilla.redhat.com/show_bug.cgi?id=1869201
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2020-3689b67b53' 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