CentOS Errata and Bugfix Advisory 2015:0978 

Upstream details at : https://rhn.redhat.com/errata/RHBA-2015-0978.html

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

x86_64:
9202591b03625c5ab5bb75fa53564ddebdf01c6ce3cc42c4f674d66ad8e26009  libpcap-1.5.3-4.el7_1.2.i686.rpm
f7153fa462eb82d760308cf16c9122d5f12e27c2e7430514f25e9b3f6ad98f8c  libpcap-1.5.3-4.el7_1.2.x86_64.rpm
31fbd81730e92b6ec6608898ce13f3381f3148be0352a78b6739018f88a39d9d  libpcap-devel-1.5.3-4.el7_1.2.i686.rpm
b4964d896dfceeb22c01740377c506575095808a59e3e4aa44fd71e3d15b4dbc  libpcap-devel-1.5.3-4.el7_1.2.x86_64.rpm

Source:
6107ad2b0a2ab469b1c3d91d664327db2e5c12a51a92d0a492d7e61cc4864196  libpcap-1.5.3-4.el7_1.2.src.rpm