1 files changed, 2 insertions, 0 deletions

diff --git a/plugins/check_snmp.c b/plugins/check_snmp.c
index 83083a8..a4be11b 100644
--- a/plugins/check_snmp.c
+++ b/plugins/check_snmp.c
@@ -321,6 +321,8 @@ main (int argc, char **argv)
                     eval_method[i] & WARN_EQ ||
                     eval_method[i] & WARN_NE) {
                         p2 = strpbrk (p2, "0123456789");
+                        if (p2 == NULL) 
+                                terminate (STATE_UNKNOWN,"No valid data returned");
                         response_value[i] = strtoul (p2, NULL, 10);
                         iresult = check_num (i);
                         asprintf (&show, "%lu", response_value[i]);