Netlink is a feature of the Linux kernel which allows communication between kernel and user space.
An array index error in the
**__sock_diag_rcv_msg** function in the Linux kernel allows local users to gain root privileges by sending a Netlink message with a large family value.
Upgrade to Linux kernel 3.7.10 or higher or install the appropriate package update from the operating system vendor.
Exploit works on Ubuntu or Fedora and requires an existing unprivileged shell connection to the target.