CVE-2017-18079

drivers/input/serio/i8042.c en el kernel de Linux en versiones anteriores a la 4.12.4 permite que atacantes provoquen una denegación de servicio (desreferencia de puntero NULL y cierre inesperado del sistema) o que, posiblemente, tengan otro tipo de impacto sin especificar debido a que el valor port->exists puede cambiar tras ser validado.

Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memory. Jan H. Schonherr discovered that the Xen subsystem did not properly handle block IO merges correctly in some situations. An attacker in a guest vm could use this to cause a denial of service or possibly gain administrative privileges in the host. Various other issues were also addressed.