Red Hat Security Advisory 2015-1627-01 - The glibc packages provide the standard C libraries, POSIX thread libraries, standard math libraries, and the Name Server Caching Daemon used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. An invalid free flaw was found in glibc's getaddrinfo() function when used with the AI_IDN flag. A remote attacker able to make an application call this function could use this flaw to execute arbitrary code with the permissions of the user running the application. Note that this flaw only affected applications using glibc compiled with libidn support.
09824f32e3805a9e1048366162b64a1f26104e46bb0ac50ac2b3cfa92168bbeb
Debian Linux Security Advisory 3169-1 - Several vulnerabilities have been fixed in eglibc, Debian's version of the GNU C library.
3fe931b7ce23c334ac550e9b3f9ce61c02f2b4cad71b1b7018abfe10daf65a20