Linux BPF Sign Extension Local Privilege Escalation
Posted on 19 July 2018
Linux kernel versions prior to 4.14.8 utilize the Berkeley Packet Filter (BPF) which contains a vulnerability where it may improperly perform signing for an extension. This can be utilized to escalate privileges. The target system must be compiled with BPF support and must not have kernel.unprivileged_bpf_disabled set to 1. This Metasploit module has been tested successfully on many different kernels.
