update to xen-4.19.3 includes patches for x86: Incorrect stubs exception handling for flags recovery [XSA-470, CVE-2025-27465] x86: Transitive Scheduler Attacks [XSA-471, CVE-2024-36350,

Source: Fedora 41: Xen Update 4.19.3 Critical Transitive Attack 2025-d2a821d9d1