Buffer overflow in the rc_mksid function in plugins/radius/util.c in Paul's PPP Package (ppp) 2.4.6 and earlier, when the PID for pppd is greater than 65535, allows remote attackers to cause a denial of service (crash) via a start accounting message to the RADIUS server.
https://security.gentoo.org/glsa/201701-50
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=782450
http://www.ubuntu.com/usn/USN-2595-1
http://www.securityfocus.com/bid/74163
http://www.mandriva.com/security/advisories?name=MDVSA-2015:222
http://www.debian.org/security/2015/dsa-3228
http://lists.opensuse.org/opensuse-updates/2015-11/msg00147.html