CVE-2012-2133

Una vulnerabilidad de uso después de liberación en el kernel de Linux en versiones anteriores a la v3.3.6, cuando 'huge pages' está habilitado, permite a usuarios locales provocar una denegación de servicio (caída del sistema) o posiblemente obtener privilegios mediante la interacción con un sistema de archivos hugetlbfs, tal y como lo demuestra una operación de umount que provoca un manejo inadecuado de los datos de cuota.

The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. A flaw was found in the way Netlink messages without SCM_CREDENTIALS data set were handled. When not explicitly set, the data was sent but with all values set to 0, including the process ID and user ID, causing the Netlink message to appear as if it were sent with root privileges. A local, unprivileged user could use this flaw to send spoofed Netlink messages to an application, possibly resulting in the application performing privileged operations if it relied on SCM_CREDENTIALS data for the authentication of Netlink messages.