Apache has issued an advisory on December 18: https://www.openwall.com/lists/oss-security/2019/12/19/2 Mageia 7 is also affected.
As Bug 20693 noted, this was already fixed in the log4j12 package by Fedora (patch imported by yours truly in r1107578). *** This bug has been marked as a duplicate of bug 20693 ***
Status: NEW => RESOLVEDResolution: (none) => DUPLICATE