CVE-2010-4565

La función bcm_connect en net/can/bcm.c (también conocido como el Broadcast Manager) en la implementación del Controller Area Network en el kernel de Linux 2.6.36 y anteriores crea un archivo público accesible con un nombre que contiene una dirección de memoria del kernel, lo que permite a usuarios locales obtener información sensible sobre el uso de memoria del kernel listado por este nombre de archivo.

Multiple vulnerabilities have been discovered and fixed in the Linux 2.6 kernel. The X.25 implementation does not properly parse facilities, which allows remote attackers to cause a denial of service (heap memory corruption and panic) or possibly have unspecified other impact via malformed data, a different vulnerability than CVE-2010-4164. The bcm_connect function Broadcast Manager in the Controller Area Network implementation in the Linux creates a publicly accessible file with a filename containing a kernel memory address, which allows local users to obtain potentially sensitive information about kernel memory use by listing this filename. The install_special_mapping function in mm/mmap.c does not make an expected security_file_mmap function call, which allows local users to bypass intended mmap_min_addr restrictions and possibly conduct NULL pointer dereference attacks via a crafted assembly-language application. Various other issues have also been addressed.