Artifex Ghostscript 9.25 and earlier allows attackers to bypass a sandbox protection mechanism via vectors involving the 1Policy operator.
https://access.redhat.com/errata/RHSA-2018:3834
https://bugs.chromium.org/p/project-zero/issues/detail?id=1696
https://lists.debian.org/debian-lts-announce/2018/10/msg00013.html
https://security.gentoo.org/glsa/201811-12
https://support.f5.com/csp/article/K22141757?utm_source=f5support&%3Butm_medium=RSS
https://usn.ubuntu.com/3803-1/