Ghostscript is an interpreter for the PostScript language and for PDF.
Multiple vulnerabilities have been discovered in GPL Ghostscript and the bundled OpenJPEG. Please review the CVE identifiers and GLSA-201612-26 (OpenJPEG) referenced below for additional information.
Note: GPL Ghostscript in Gentoo since app-text/ghostscript-gpl-9.20-r1 no longer bundles OpenJPEG.
A context-dependent attacker could entice a user to open a specially crafted PostScript file or PDF using GPL Ghostscript possibly resulting in the execution of arbitrary code with the privileges of the process or a Denial of Service condition.
There is no known workaround at this time.
All GPL Ghostscript users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose
">=app-text/ghostscript-gpl-9.20-r1"