The vulnerability of the lp_setup() function in the Secure Boot environment loader of the Linux operating system allows a hacker to cause a system failure.

The vulnerability of the lpsetup function, a loader for the Secure Boot mechanism in Linux kernel, arises from writing beyond buffer boundaries. The Linux driver/char/lp.c code does not perform boundary checking on the parportnr array. Exploiting this vulnerability could allow an attacker to caus...