CVE-2018-1118

El vhost del kernel de Linux desde la versión 4.8 no inicializa correctamente la memoria en los mensajes que se pasan entre invitados virtuales y el sistema operativo host en la función vhost/vhost.c:vhost_new_msg(). Esto puede permitir que usuarios con privilegios locales lean el contenido de la memoria del kernel al leer del archivo de dispositivo /dev/vhost-net.

The Linux kernel does not properly initialize memory in messages passed between virtual guests and the host operating system in the vhost/vhost.c:vhost_new_msg() function. This can allow local privileged users to read some kernel memory contents when reading from the /dev/vhost-net device file.

It was discovered that the VirtIO subsystem in the Linux kernel did not properly initialize memory in some situations. A local attacker could use this to possibly expose sensitive information. Seunghun Han discovered an information leak in the ACPI handling code in the Linux kernel when handling early termination of ACPI table loading. A local attacker could use this to expose sensitive informal. Various other issues were also addressed.