The allow_execstack plugin for setroubleshoot allows local users to execute arbitrary commands by triggering an execstack SELinux denial with a crafted filename, related to the commands.getoutput function.
https://rhn.redhat.com/errata/RHSA-2016-1267.html
https://github.com/fedora-selinux/setroubleshoot/commit/eaccf4c0d20a27d3df5ff6de8c9dcc80f6f40718
https://bugzilla.redhat.com/show_bug.cgi?id=1339250
https://access.redhat.com/errata/RHSA-2016:1293