Denial of Service in ps (CVE-2018-1123) An attacker can overflow the output buffer of ps, when executed by another user, administrator, or script: a denial of service only (not an LPE), because ps mmap()s its output buffer and mprotect()s its last page with PROT_NONE (an effective guard page). https://security.archlinux.org/CVE-2018-1123 https://www.qualys.com/2018/05/17/procps-ng-audit-report-advisory.txt