For details, see: https://bugs.gentoo.org/635898 https://nvd.nist.gov/vuln/detail/CVE-2017-15953 https://nvd.nist.gov/vuln/detail/CVE-2017-15954 https://nvd.nist.gov/vuln/detail/CVE-2017-15955 https://github.com/extramaster/bchunk/issues/2 https://github.com/extramaster/bchunk/issues/3 https://github.com/extramaster/bchunk/issues/4