CVE-2018-19966

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because of an interpretation conflict for a union data structure associated with shadow paging. NOTE: this issue exists because of an incorrect fix for CVE-2017-15595.

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because of an interpretation conflict for a union data structure associated with shadow paging. NOTE: this issue exists because of an incorrect fix for CVE-2017-15595.

Se ha descubierto un problema en Xen hasta las versiones 4.11.x que permite que usuarios invitados x86 del sistema operativo provoquen una denegación de servicio (cierre inesperado del host del sistema operativo) u obtengan privilegios del host del sistema operativo debido a un conflicto de interpretación para una estructura de datos de unión asociados con páginas shadow. NOTA: este problema existe debido a una solución incorrecta para CVE-2017-15595.