CentOS Errata and Enhancement Advisory 2015:1600 

Upstream details at : https://rhn.redhat.com/errata/RHEA-2015-1600.html

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

i386:
c3d93d0fd54c593609e5993911c7823941600cb620758117f49dcb454aa75ed5  kmod-iwlwifi_dup-0.1_rh1-1.el6_6.i686.rpm
e444efaf101ddcb1fc26eb28646420fa26f42b41466f811cf889db718420c12c  kmod-iwlwifi_dup-firmware-0.1_rh1-1.el6_6.i686.rpm

x86_64:
bf0db204c599967070d41209240eea643e2e03131f730be92a79db20a76b2b1d  kmod-iwlwifi_dup-0.1_rh1-1.el6_6.x86_64.rpm
e03a1f36e1a367558bc59ba7e0072dc0dc919b23ac761d456827489446aa4fc6  kmod-iwlwifi_dup-firmware-0.1_rh1-1.el6_6.x86_64.rpm

Source:
c2d2378c6fc32cf978c3597fd5c2d3f87fffffde0eb305685e7423eae643a337  iwlwifi_dup-0.1_rh1-1.el6_6.src.rpm