The pduread function in pdu.c in libpcp in Performance Co-Pilot (PCP) before 3.6.5 does not properly time out connections, which allows remote attackers to cause a denial of service (pmcd hang) by sending individual bytes of a PDU separately, related to an "event-driven programming flaw."
https://hermes.opensuse.org/messages/15540172
https://hermes.opensuse.org/messages/15540133
https://hermes.opensuse.org/messages/15471040
https://bugzilla.redhat.com/show_bug.cgi?id=841706
http://www.openwall.com/lists/oss-security/2012/08/16/1
http://www.debian.org/security/2012/dsa-2533
http://lists.opensuse.org/opensuse-security-announce/2013-01/msg00024.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-August/085333.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-August/085324.html