Net-SNMP 5.7.1 and earlier, when AgentX is registering to handle a MIB and processing GETNEXT requests, allows remote attackers to cause a denial of service (crash or infinite loop, CPU consumption, and hang) by causing the AgentX subagent to timeout. https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-6151
https://github.com/Metaswitch/centos-clearwater-net-snmp/blob/master/SOURCES/net-snmp-5.7.2-agentx-disconnect-crash.patch