Memory leak in the __res_vinit function in the IPv6 name server management code in libresolv in GNU C Library (aka glibc or libc6) before 2.24 allows remote attackers to cause a denial of service (memory consumption) by leveraging partial initialization of internal resolver data structures.
https://www.sourceware.org/ml/libc-alpha/2016-08/msg00212.html
https://sourceware.org/bugzilla/show_bug.cgi?id=19257