CVE-2016-7913

La función xc2028_set_config en drivers/media/tuners/tuner-xc2028.c en el kernel de Linux en versiones anteriores a 4.6 permite a usuarios locales obtener privilegios o provocar una denegación de servicio (uso después de liberación de memoria) mediante vectores que implican la omisión del nombre de firmware de una determinada estructura de datos.

The xc2028_set_config function in drivers/media/tuners/tuner-xc2028.c in the Linux kernel before 4.6 allows local users to gain privileges or cause a denial of service (use-after-free) via vectors involving omission of the firmware name from a certain data structure. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely.

Dmitry Vyukov discovered that the key management subsystem in the Linux kernel did not properly restrict adding a key that already exists but is negatively instantiated. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a use-after-free vulnerability existed in the device driver for XCeive xc2028/xc3028 tuners in the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.