diff --git a/libr/anal/sign.c b/libr/anal/sign.c
index 1c7b70b53a..779e91c41b 100644
--- a/libr/anal/sign.c
+++ b/libr/anal/sign.c
@@ -2375,10 +2375,12 @@ static RListIter *collision_skip_unused(RListIter *iter, RSignType *used) {
 	RListIter *next;
 	while ((next = r_list_iter_get_next (iter))) {
 		n = r_list_iter_get_data (next);
-		RSignType t = n[0];
-		if (!n || skip != t) {
-			if (type_in_array (used, t)) {
-				return iter;
+		if (n) {
+			RSignType t = n[0];
+			if (skip != t) {
+				if (type_in_array (used, t)) {
+					return iter;
+				}
 			}
 		}
 		iter = next;
diff --git a/libr/core/cmd_hash.c b/libr/core/cmd_hash.c
index b30a3bca2f..b104f24ac4 100644
--- a/libr/core/cmd_hash.c
+++ b/libr/core/cmd_hash.c
@@ -96,7 +96,9 @@ static void handle_luhn(const ut8 *block, int len) {
 }
 
 static void handle_ssdeep(const ut8 *block, int len) {
-	r_cons_printf ("%s\n", r_hash_ssdeep (block, len));
+	char *res = r_hash_ssdeep (block, len);
+	r_cons_printf ("%s\n", res);
+	free (res);
 }
 
 static void handle_crc8_smbus(const ut8 *block, int len) {
diff --git a/libr/core/disasm.c b/libr/core/disasm.c
index 6da711eafa..a2250a04a6 100644
--- a/libr/core/disasm.c
+++ b/libr/core/disasm.c
@@ -2521,7 +2521,7 @@ static int ds_disassemble(RDisasmState *ds, ut8 *buf, int len) {
 				char *op_hex = r_asm_op_get_hex (&ds->asmop);
 				r_asm_op_set_asm (&ds->asmop, sdb_fmt (".hex %s%s", op_hex, tail));
 				bool be = ds->core->print->big_endian;
-				int immbase = (ds && ds->hint && ds->hint->immbase)? ds->hint->immbase: 0;
+				int immbase = (ds->hint && ds->hint->immbase)? ds->hint->immbase: 0;
 				switch (meta_size) {
 				case 2:
 					ds->analop.val = r_read_ble16 (buf, be);
diff --git a/libr/io/p/io_socket.c b/libr/io/p/io_socket.c
index cf41454adc..1ae06e71fb 100644
--- a/libr/io/p/io_socket.c
+++ b/libr/io/p/io_socket.c
@@ -15,9 +15,11 @@ typedef struct {
 
 
 static void free_socketdata(RIOSocketData *sd) {
-	r_socket_free (sd->sc);
-	r_socket_free (sd->sl);
-	free (sd);
+	if (sd) {
+		r_socket_free (sd->sc);
+		r_socket_free (sd->sl);
+		free (sd);
+	}
 }
 
 static int __write(RIO *io, RIODesc *desc, const ut8 *buf, int count) {
@@ -119,12 +121,14 @@ static RIODesc *__open(RIO *io, const char *pathname, int rw, int mode) {
 		} else {
 			eprintf ("Missing port.\n");
 			free_socketdata (data);
+			free (host);
 			return NULL;
 		}
 		/* listen and wait for connection */
 		data->sc = r_socket_new (false);
 		if (!r_socket_connect (data->sc, host, port, R_SOCKET_PROTO_TCP, 0)) {
 			eprintf ("Cannot connect\n");
+			free (host);
 			free_socketdata (data);
 			return NULL;
 		}