MAC: Check length pointer in ie vector length validate

Jarkko Paso · Jarkko Paso · commit 85f13450147c · 2018-03-26T12:33:43.000+03:00
diff --git a/source/MAC/IEEE802_15_4/mac_mcps_sap.c b/source/MAC/IEEE802_15_4/mac_mcps_sap.c
@@ -154,7 +154,10 @@ void mcps_sap_data_req_handler(protocol_interface_rf_mac_setup_s *rf_mac_setup ,
 
 static bool mac_ie_vector_length_validate(ns_ie_iovec_t *ie_vector, uint16_t iov_length,  uint16_t *length_out)
 {
-    *length_out = 0;
+    if (length_out) {
+        *length_out = 0;
+    }
+
     if (!iov_length) {
         return true;
     }

Original file line number	Diff line number	Diff line change
`@@ -154,7 +154,10 @@ void mcps_sap_data_req_handler(protocol_interface_rf_mac_setup_s *rf_mac_setup ,`
`154`	`154`
`155`	`155`	`static bool mac_ie_vector_length_validate(ns_ie_iovec_t ie_vector, uint16_t iov_length, uint16_t length_out)`
`156`	`156`	`{`
`157`		`- *length_out = 0;`
	`157`	`+ if (length_out) {`
	`158`	`+ *length_out = 0;`
	`159`	`+ }`
	`160`	`+`
`158`	`161`	`if (!iov_length) {`
`159`	`162`	`return true;`
`160`	`163`	`}`