Buffer overflow in the extend_buffers function in the regular expression matcher (posix/regexec.c) in glibc, possibly 2.17 and earlier, allows context-dependent attackers to cause a denial of service (memory corruption and crash) via crafted multibyte characters.
https://security.gentoo.org/glsa/201503-04
https://exchange.xforce.ibmcloud.com/vulnerabilities/81707
http://www.vmware.com/security/advisories/VMSA-2014-0008.html
http://www.ubuntu.com/usn/USN-1991-1
http://www.securitytracker.com/id/1028063
http://www.securityfocus.com/bid/57638
http://www.openwall.com/lists/oss-security/2013/01/30/5
http://www.mandriva.com/security/advisories?name=MDVSA-2013:163
http://sourceware.org/ml/libc-alpha/2013-01/msg00967.html
http://sourceware.org/bugzilla/show_bug.cgi?id=15078
http://secunia.com/advisories/55113
http://secunia.com/advisories/51951
http://rhn.redhat.com/errata/RHSA-2013-1605.html