KDE kdelibs before 4.14.32 and KAuth before 5.34 allow local users to gain root privileges by spoofing a callerID and leveraging a privileged helper app.
www.debian.org/security/2017/dsa-3849
www.openwall.com/lists/oss-security/2017/05/10/3
www.securityfocus.com/bid/98412
www.securitytracker.com/id/1038480
access.redhat.com/errata/RHSA-2017:1264
bugzilla.redhat.com/show_bug.cgi?id=1449647
cgit.kde.org/kauth.git/commit/?id=df875f725293af53399f5146362eb158b4f9216a
cgit.kde.org/kdelibs.git/commit/?id=264e97625abe2e0334f97de17f6ffb52582888ab
security.gentoo.org/glsa/201706-29
www.exploit-db.com/exploits/42053/
www.kde.org/info/security/advisory-20170510-1.txt