This update for xen fixes the following issues:
CVE-2021-28706: Fixed guests may exceed their designated memory limit (XSA-385) (bsc#1192554).
Fixed 15sp4 uefi fv guest on 12sp5 host unable to bootup with sriov pci device plugin (bsc#1191510).
{ "binaries": [ { "xen": "4.12.4_16-3.55.1", "xen-libs-32bit": "4.12.4_16-3.55.1", "xen-tools-domU": "4.12.4_16-3.55.1", "xen-libs": "4.12.4_16-3.55.1", "xen-doc-html": "4.12.4_16-3.55.1", "xen-tools": "4.12.4_16-3.55.1" } ] }
"https://ftp.suse.com/pub/projects/security/osv/SUSE-SU-2021:3852-1.json"
{ "binaries": [ { "xen-devel": "4.12.4_16-3.55.1" } ] }