Buffer overflow in the mpfr_strtofr function in GNU MPFR before 3.1.2-p11 allows context-dependent attackers to have unspecified impact via vectors related to incorrect documentation for mpn_set_str.
https://security.gentoo.org/glsa/201512-06
https://gmplib.org/list-archives/gmp-bugs/2013-December/003267.html
https://gforge.inria.fr/scm/viewvc.php/mpfr?revision=9243&view=revision
https://bugzilla.redhat.com/show_bug.cgi?id=1171701
http://www.securityfocus.com/bid/71542
http://www.openwall.com/lists/oss-security/2015/01/03/12
http://www.mpfr.org/mpfr-3.1.2/patch11
http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147745.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-January/147737.html