CVE-2009-2406

Desbordamiento de búfer basado en pila en la función parse_tag_11_packet en fs/ecryptfs/keystore.c en el subsistema eCryptfs del kernel de Linux anteriores a v2.6.30.4 permite a usuarios locales provocar una denegación de servicio (finalización del sistema) o posiblemente obtener mayores privilegios mediante vectores que utilizan un fichero eCryptfs modificado, relacionados con la no comprobación de que la longitud de la clave de firma en un paquete "Tag 11" es compatible con el tamaño del búfer de la clave de firma.

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.