Red Hat Security Advisory: virt:rhel security update

CVE-2018-12126 — hardware: Microarchitectural Store Buffer Data Sampling (MSBDS) CVE-2018-12127 — hardware: Micro-architectural Load Port Data Sampling - Information Leak (MLPDS) CVE-2018-12130 — hardware: Microarchitectural Fill Buffer Data Sampling (MFBDS) CVE-2018-20815 — QEMU: device_tree: heap buffer overflow while loading device tree blob CVE-2019-3855 — libssh2: Integer overflow in transport read resulting in out of bounds write CVE-2019-3856 — libssh2: Integer overflow in keyboard interactive handling resulting in out of bounds write CVE-2019-3857 — libssh2: Integer overflow in SSH packet processing channel resulting in out of bounds write CVE-2019-3863 — libssh2: Integer overflow in user authenticate keyboard interactive allows out-of-bounds writes CVE-2019-11091 — hardware: Microarchitectural Data Sampling Uncacheable Memory (MDSUM)