CVE-2011-1770

Desbordamiento de entero en la función dccp_parse_options (net/DCCP/options.c) en el kernel de Linux antes de la versión v2.6.33.14 permite a atacantes remotos causar una denegación de servicio a través de un paquete de datagramas del Protocolo de control de congestión (DCCP) con una longitud de opciones de características no válida, lo que provoca una sobre lectura de un búfer.

The kernel packages contain the Linux kernel, the core of any Linux operating system. An integer underflow flaw, leading to a buffer overflow, was found in the Linux kernel's Datagram Congestion Control Protocol implementation. This could allow a remote attacker to cause a denial of service. Missing sanity checks were found in setup_arg_pages() in the Linux kernel. When making the size of the argument and environment area on the stack very large, it could trigger a BUG_ON(), resulting in a local denial of service. Various other issues were also addressed.