This update for xen fixes the following issues:
Update to Xen 4.18.5:
Security fixes:
Other fixes:
{
    "binaries": [
        {
            "xen-doc-html": "4.18.5_02-150600.3.23.1",
            "xen": "4.18.5_02-150600.3.23.1",
            "xen-libs-32bit": "4.18.5_02-150600.3.23.1",
            "xen-tools-xendomains-wait-disk": "4.18.5_02-150600.3.23.1",
            "xen-tools-domU": "4.18.5_02-150600.3.23.1",
            "xen-libs": "4.18.5_02-150600.3.23.1",
            "xen-devel": "4.18.5_02-150600.3.23.1",
            "xen-tools": "4.18.5_02-150600.3.23.1"
        }
    ]
}