The add_probe function in modutils/modprobe.c in BusyBox before 1.23.0 allows local users to bypass intended restrictions on loading kernel modules via a / (slash) character in a module name, as demonstrated by an ifconfig /usbserial up command or a mount -t /snd_pcm none / command. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2014-9645
