CVE-2010-4072

La función copy_shmid_to_user de ipc/shm.c del kernel de Linux en versiones anteriores a la 2.6.37-rc1 no inicializa una determinada estructura, lo que permite a usuarios locales obtener información potencialmente confidencial de la memoria de la pila a través de vectores de ataque relacionados con la llamada del sistema shmctl y el interfaz shm antigua.

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.