commit 4c5633f1603e4bd03ed05c37d782ec8911759c47
Author: Robert Story <rstory@freesnmp.com>
Date:   Mon May 14 11:40:06 2012 -0400

    NEWS: snmp: BUG: 3526549: CVE-2012-2141 Array index error leading to crash

diff --git a/agent/mibgroup/agent/extend.c b/agent/mibgroup/agent/extend.c
index d00475f..1f8586a 100644
--- a/agent/mibgroup/agent/extend.c
+++ b/agent/mibgroup/agent/extend.c
@@ -1299,6 +1299,10 @@ handle_nsExtendOutput2Table(netsnmp_mib_handler          *handler,
                  * Determine which line we've been asked for....
                  */
                 line_idx = *table_info->indexes->next_variable->val.integer;
+                if (line_idx < 1 || line_idx > extension->numlines) {
+                    netsnmp_set_request_error(reqinfo, request, SNMP_NOSUCHINSTANCE);
+                    continue;
+                }
                 cp  = extension->lines[line_idx-1];
 
                 /*