CentOS Errata and Bugfix Advisory 2015:0926 

Upstream details at : https://rhn.redhat.com/errata/RHBA-2015-0926.html

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

i386:
516f0e242b8798bb3a226969be158641493f0b222bf5205dab03d9a55cad64fb  nss-util-3.18.0-1.el6_6.i686.rpm
bfb774a4ee927ce655ece5e7fc0910c47fbc4ccbaaa312be066322f88a22906f  nss-util-devel-3.18.0-1.el6_6.i686.rpm

x86_64:
516f0e242b8798bb3a226969be158641493f0b222bf5205dab03d9a55cad64fb  nss-util-3.18.0-1.el6_6.i686.rpm
52c5b9b05b344fe40a7f601bd25f23c369f0f647d2ffdd439028b89378396fe4  nss-util-3.18.0-1.el6_6.x86_64.rpm
bfb774a4ee927ce655ece5e7fc0910c47fbc4ccbaaa312be066322f88a22906f  nss-util-devel-3.18.0-1.el6_6.i686.rpm
4201b4eb9ab908bfd88b7a638ba84cbd6dcb4d9b47c40513900caa5b21ca38bf  nss-util-devel-3.18.0-1.el6_6.x86_64.rpm

Source:
0bae3a623b02e352caa4659fd3d6e5ce48b047e0122289b8b976ab410926f035  nss-util-3.18.0-1.el6_6.src.rpm