diff --git a/src/Expr.cc b/src/Expr.cc
index a8c2fc32c9..1ab49bcd3b 100644
--- a/src/Expr.cc
+++ b/src/Expr.cc
@@ -4910,6 +4910,7 @@ Val* ListExpr::Eval(Frame* f) const
 		if ( ! ev )
 			{
 			Error("uninitialized list value");
+			delete v;
 			return 0;
 			}
 
diff --git a/src/Net.cc b/src/Net.cc
index 2d8ee85353..149cee6e94 100644
--- a/src/Net.cc
+++ b/src/Net.cc
@@ -254,6 +254,7 @@ void net_init(name_list& interfaces, name_list& readfiles,
 				{
 				io_sources.Register(fs);
 				}
+			delete fs;
 			}
 
 		}
diff --git a/src/NetbiosSSN.cc b/src/NetbiosSSN.cc
index 274e76f137..7f7a77933d 100644
--- a/src/NetbiosSSN.cc
+++ b/src/NetbiosSSN.cc
@@ -131,6 +131,9 @@ int NetbiosSSN_Interpreter::ParseBroadcast(const u_char* data, int len,
 		return 0;
 		}
 
+	delete srcname;
+	delete dstname;
+
 	return 0;
 	}
 
diff --git a/src/POP3.cc b/src/POP3.cc
index 4ffe67ef48..3075e76507 100644
--- a/src/POP3.cc
+++ b/src/POP3.cc
@@ -158,6 +158,7 @@ void POP3_Analyzer::ProcessRequest(int length, const char* line)
 			if ( e >= end )
 				{
 				Weird("pop3_malformed_auth_plain");
+				delete decoded;
 				return;
 				}
 
@@ -167,6 +168,7 @@ void POP3_Analyzer::ProcessRequest(int length, const char* line)
 			if ( s >= end )
 				{
 				Weird("pop3_malformed_auth_plain");
+				delete decoded;
 				return;
 				}
 
diff --git a/src/RuleMatcher.cc b/src/RuleMatcher.cc
index 685e35bade..9be559c5ab 100644
--- a/src/RuleMatcher.cc
+++ b/src/RuleMatcher.cc
@@ -73,6 +73,7 @@ RuleHdrTest::RuleHdrTest(RuleHdrTest& h)
 			copied_set->ids = orig_set->ids;
 			loop_over_list(orig_set->patterns, l)
 				copied_set->patterns.append(copy_string(orig_set->patterns[l]));
+			delete copied_set;
 			}
 		}
 
@@ -1116,7 +1117,11 @@ void id_to_maskedvallist(const char* id, maskedvalue_list* append_to)
 		val_list* vals = v->AsTableVal()->ConvertToPureList()->Vals();
 		loop_over_list(*vals, i )
 			if ( ! val_to_maskedval((*vals)[i], append_to) )
+			{
+				delete vals;
 				return;
+			}
+		delete vals;
 		}
 
 	else