An issue was discovered in the Keybase command-line client before 2.8.0-20181023124437 for Linux. An untrusted search path vulnerability in the keybase-redirector application allows a local, unprivileged user on Linux to gain root privileges via a Trojan horse binary.
https://keybase.io/docs/secadv/kb002
https://hackerone.com/reports/426944
https://blog.mirch.io/2018/12/21/cve-2018-18629-keybase-linux-privilege-escalation/