CVE-2014-9940

La función regulator_ena_gpio_free en drivers/regulator/core.c en el kernel de Linux anterior a la versión 3.19 permite a usuarios locales elevar sus privilegios o provocar una denegación de servicio (uso después de liberación) a través de una aplicación especialmente diseñada para aprovechar el fallo.

It was discovered that the stack guard page for processes in the Linux kernel was not sufficiently large enough to prevent overlapping with the heap. An attacker could leverage this with another vulnerability to execute arbitrary code and gain administrative privileges It was discovered that a use-after-free vulnerability in the core voltage regulator driver of 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.