CVE-2010-4668

La función blk_rq_map_user_iov en block/blk-map.c en el kernel Linux anterior a 2.6.37-rc7 permite a usuarios locales causar una denegación de servicio (panic) a través de una petición I/O de longitud cero en un dispositivo ioctl a un dispositivo SCSI, relacionado con un mapa no alineado. NOTA: esta vulnerabilidad existe debido a una solución incompleta para CVE-2010-4163.

It was discovered that KVM did not correctly initialize certain CPU registers. A local attacker could exploit this to crash the system, leading to a denial of service. Thomas Pollet discovered that the RDS network protocol did not check certain iovec buffers. A local attacker could exploit this to crash the system or possibly execute arbitrary code as the root user. Vasiliy Kulikov discovered that the Linux kernel X.25 implementation did not correctly clear kernel memory. A local attacker could exploit this to read kernel stack memory, leading to a loss of privacy. Various other issues were also addressed.