An issue was discovered in Xen through 4.14.x allowing x86 HVM and PVH guest OS users to cause a denial of service (data corruption), cause a data leak, or possibly gain privileges because coalescing of per-page IOMMU TLB flushes is mishandled.
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-27671.json"