CVE-2019-20811

Se detectó un problema en el kernel de Linux versiones anteriores a 5.0.6. En la funciones rx_queue_add_kobject() y netdev_queue_add_kobject() en el archivo net/core/net-sysfs.c, un reconteo de referencias es manejado inapropiadamente, también se conoce como CID-a3e23f719f5c.

A flaw was found in the way the rx_queue_add_kobject and netdev_queue_add_kobject functions in the Linux kernel handled refcounting of certain objects. This flaw allows a local user who can trigger the error code path to use this vulnerability to disturb the integrity of the system.

It was discovered that the Conexant 23885 TV card device driver for the Linux kernel did not properly deallocate memory in some error conditions. A local attacker could use this to cause a denial of service. It was discovered that the Atheros HTC based wireless driver in the Linux kernel did not properly deallocate in certain error conditions. A local attacker could use this to cause a denial of service. Various other issues were also addressed.