The following security updates are available for Gentoo Linux:
GLSA 201811-11 : Asterisk: Multiple vulnerabilitiesAsterisk, GPL Ghostscript, Thunderbird, Exiv2 Updates for Gentoo Linux
GLSA 201811-12 : GPL Ghostscript: Multiple vulnerabilities
GLSA 201811-13 : Mozilla Thunderbird: Multiple vulnerabilities
GLSA 201811-14 : Exiv2: Multiple vulnerabilities