Provide references for CVE-2019-12855.
Where can I find more information about CVE-2019-12855?
References are available at: https://twistedmatrix.com/trac/ticket/9561, https://github.com/twisted/twisted/pull/1147, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PLTZDMFBNFSJMBXYJNGJHENJA4H2TSMZ/, http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00013.html, http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00028.html, https://usn.ubuntu.com/4308-2/, https://usn.ubuntu.com/4308-1/, https://www.oracle.com/security-alerts/cpuapr2020.html.