A xen security update has been released for Fedora 31.

SECURITY: Fedora 31 Update: xen-4.12.2-3.fc31

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Fedora Update Notification
FEDORA-2020-295ed0b1e0
2020-05-01 03:48:17.298406
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Name : xen
Product : Fedora 31
Version : 4.12.2
Release : 3.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:

multiple xenoprof issues [XSA-313, CVE-2020-11740, CVE-2020-11741] (#1823912,
#1823914) Missing memory barriers in read-write unlock paths [XSA-314,
CVE-2020-11739] (#1823784) Bad error path in GNTTABOP_map_grant [XSA-316,
CVE-2020-11743] (#1823926) Bad continuation handling in GNTTABOP_copy [XSA-318,
CVE-2020-11742] (#1823943)
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ChangeLog:

* Wed Apr 15 2020 Michael Young - 4.12.2-3
- multiple xenoprof issues [XSA-313, CVE-2020-11740, CVE-2020-11741]
(#1823912, #1823914)
- Missing memory barriers in read-write unlock paths [XSA-314,
CVE-2020-11739] (#1823784)
- Bad error path in GNTTABOP_map_grant [XSA-316, CVE-2020-11743] (#1823926)
- Bad continuation handling in GNTTABOP_copy [XSA-318, CVE-2020-11742]
(#1823943)
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References:

[ 1 ] Bug #1823783 - CVE-2020-11739 xen: missing memory barriers in read-write unlock paths (XSA-314)
  https://bugzilla.redhat.com/show_bug.cgi?id=1823783
[ 2 ] Bug #1823911 - CVE-2020-11740 xen: xenoprof issue allows guest OS users without active profiling to obtain sensitive information about other guests (XSA-313)
  https://bugzilla.redhat.com/show_bug.cgi?id=1823911
[ 3 ] Bug #1823913 - CVE-2020-11741 xen: xenoprof issue allows guest OS users with active profiling to obtain sensitive information about other guests (XSA-313)
  https://bugzilla.redhat.com/show_bug.cgi?id=1823913
[ 4 ] Bug #1823925 - CVE-2020-11743 xen: bad error path in GNTTABOP_map_grant (XSA-316)
  https://bugzilla.redhat.com/show_bug.cgi?id=1823925
[ 5 ] Bug #1823942 - CVE-2020-11742 xen: bad continuation handling in GNTTABOP_copy (XSA-318)
  https://bugzilla.redhat.com/show_bug.cgi?id=1823942
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This update can be installed with the "dnf" update program. Use
su -c 'dnf upgrade --advisory FEDORA-2020-295ed0b1e0' 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