procps-ng before version 3.3.15 is vulnerable to a local privilege escalation in top. If a user runs top with HOME unset in an attacker-controlled directory, the attacker could achieve privilege escalation by exploiting one of several vulnerabilities in the config_file() function. (CVE-2018-1122)
Impact
A local attacker can perform privilege escalation and cause a denial-of-service (DoS) or execute malicious code.