kernel: xen: Xen hypercall page unsafe against speculative attacks (Xen Security Advisory 466)

A flaw was found in Xen hypercall page handling within virtualized guest environments. The Xen hypercall page contains code generated by the hypervisor that lacks awareness of guest operating system CPU speculation mitigations, such as return instruction transforms, and Control-flow Integrity CFI...

kernel: xen: Xen hypercall page unsafe against speculative attacks (Xen Security Advisory 466)

A flaw was found in Xen hypercall page handling within virtualized guest environments. The Xen hypercall page contains code generated by the hypervisor that lacks awareness of guest operating system CPU speculation mitigations, such as return instruction transforms, and Control-flow Integrity CFI...