The calloc function in the glibc package in Red Hat Enterprise Linux (RHEL) 6.7 and 7.2 does not properly initialize memory areas, which might allow context-dependent attackers to cause a denial of service (hang or crash) via unspecified vectors.
http://rhn.redhat.com/errata/RHSA-2016-0176.html
https://bugzilla.redhat.com/show_bug.cgi?id=1246713
https://bugzilla.redhat.com/show_bug.cgi?id=1256285
https://bugzilla.redhat.com/show_bug.cgi?id=1293976
https://kc.mcafee.com/corporate/index?page=content&id=SB10150
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html