CVE-2016-3135

Desbordamientos de enteros en la función xt_alloc_table_info en net/netfilter/x_tables.c en el kernel de Linux hasta la versión 4.5.2 en plataformas de 32-bit permite a usuarios locales obtener privilegios o causar una denegación de servicio (corrupción de memoria dinámica) a través de una llamada IPT_SO_SET_REPLACE setsockopt.

Ben Hawkes discovered that the Linux netfilter implementation did not correctly perform validation when handling IPT_SO_SET_REPLACE events. A local unprivileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code with administrative privileges. Ben Hawkes discovered an integer overflow in the Linux netfilter implementation. On systems running 32 bit kernels, a local unprivileged attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code with administrative privileges. Various other issues were also addressed.