This has been fixed in upstream version 5.7.2 (see README).

--- a/agent/mibgroup/agent/extend.c

+++ b/agent/mibgroup/agent/extend.c

@@ -473,10 +473,21 @@ extend_parse_config(const char *token, char *cptr)

} else if (!strcmp( token, "sh" ) ||

!strcmp( token, "exec" )) {

- if ( num_compatability_entries == max_compatability_entries )

+ if ( num_compatability_entries == max_compatability_entries ) {

/* XXX - should really use dynamic allocation */

- config_perror("No further UCD-compatible entries" );

- else

+ netsnmp_old_extend *new_compatability_entries;

+ new_compatability_entries = realloc(compatability_entries,

+ max_compatability_entries*2*sizeof(netsnmp_old_extend));

+ if (!new_compatability_entries)

+ config_perror("No further UCD-compatible entries" );

+ else {

+ memset(new_compatability_entries+num_compatability_entries, 0,

+ sizeof(netsnmp_old_extend)*max_compatability_entries);

+ max_compatability_entries *= 2;

+ compatability_entries = new_compatability_entries;

+ }

+ }

+ if (num_compatability_entries != max_compatability_entries)

compatability_entries[

num_compatability_entries++ ].exec_entry = extension;

}