Array index error in the scanstring function in the _json module in Python 2.7 through 3.5 and simplejson before 2.6.1 allows context-dependent attackers to read arbitrary process memory via a negative index value in the idx argument to the raw_decode function.
bugs.python.org/issue21529
lists.opensuse.org/opensuse-updates/2014-07/msg00015.html
openwall.com/lists/oss-security/2014/06/24/7
rhn.redhat.com/errata/RHSA-2015-1064.html
www.securityfocus.com/bid/68119
bugs.debian.org/cgi-bin/bugreport.cgi?bug=752395
bugzilla.redhat.com/show_bug.cgi?id=1112285
hackerone.com/reports/12297
security.gentoo.org/glsa/201503-10