CentOS Errata and Bugfix Advisory 2015:1822 

Upstream details at : https://rhn.redhat.com/errata/RHBA-2015-1822.html

The following updated files have been uploaded and are currently 
syncing to the mirrors: ( sha256sum Filename ) 

i386:
e88cf71709ba95883cf472e2e8228867337f8bcd8ce8f8e3ee42bc50780d540f  glibc-2.12-1.166.el6_7.3.i686.rpm
a197b07383c0ccfc48ea4e26d65e01caaaf64cf9ebdee649964ed3b64d779263  glibc-common-2.12-1.166.el6_7.3.i686.rpm
c592a8d8340b15bb72e122810b006daf4e7f54d85b83daea673b11867756321c  glibc-devel-2.12-1.166.el6_7.3.i686.rpm
6b8890076de6a9261b569b37e32f63c3275a4a5b3e39239a0be5cc431341e8bd  glibc-headers-2.12-1.166.el6_7.3.i686.rpm
48cc8cf7fb7fb6e6723cd1e033f2a358106658cfec97542306bb5cec1ccaf9e6  glibc-static-2.12-1.166.el6_7.3.i686.rpm
0aadb93efcf61a5f5b26a94284dedc1dcff6dcfe2e59f8557e382315cd32c0d8  glibc-utils-2.12-1.166.el6_7.3.i686.rpm
5d279460edcf16958a25d4d0016310b0fda0d7459bec9d00ea0ab0f20d7b8ffb  nscd-2.12-1.166.el6_7.3.i686.rpm

x86_64:
e88cf71709ba95883cf472e2e8228867337f8bcd8ce8f8e3ee42bc50780d540f  glibc-2.12-1.166.el6_7.3.i686.rpm
5ffa96a7eb946cf558fef748e081ca6b49492e4a45397b3b59c678412b81d602  glibc-2.12-1.166.el6_7.3.x86_64.rpm
cddd45e90d919e87f92d0f911c674bf35960cbbb376eb5182f4b1c7ca85d471d  glibc-common-2.12-1.166.el6_7.3.x86_64.rpm
c592a8d8340b15bb72e122810b006daf4e7f54d85b83daea673b11867756321c  glibc-devel-2.12-1.166.el6_7.3.i686.rpm
893edb51df79b670c8aaa4f22700c850b16bdafe0dd70125c9e2551b2ceee873  glibc-devel-2.12-1.166.el6_7.3.x86_64.rpm
27ddbdd367d041db8ad4385c00e1064ee585eed2d39760917befb4abc732c4b0  glibc-headers-2.12-1.166.el6_7.3.x86_64.rpm
48cc8cf7fb7fb6e6723cd1e033f2a358106658cfec97542306bb5cec1ccaf9e6  glibc-static-2.12-1.166.el6_7.3.i686.rpm
34bba8e359949c1b38b283c4733ceeee021f4a36f0ceafa5d2cfcfaeacd55f82  glibc-static-2.12-1.166.el6_7.3.x86_64.rpm
4a9e963c9022289c7c0ddf520f457d9e591b2f085ef7c23b08285d3b38cee9da  glibc-utils-2.12-1.166.el6_7.3.x86_64.rpm
ce8d22df8c0433196b129bbf52c632563856502fa589b093e99c7775a5660a9b  nscd-2.12-1.166.el6_7.3.x86_64.rpm

Source:
a361834d9e2fc4c175cec86ff0717f51105871316e5aca1ce0923b59be2cd4af  glibc-2.12-1.166.el6_7.3.src.rpm