Update to 2.5.7 (CVE-2019-15845, CVE-2019-16201, CVE-2019-16254, CVE-2019-16255). Previous minor versions fix other vulnerabilities which are not built in this package in rdoc and rubygems but better get the full update as it also contains bug fixes.
updates/7/ruby/current/SOURCES/sha1.lst
updates/7/ruby/current/SPECS/ruby.spec