network: fix possible memleak caused by multiple setting of Bridge=, Bond= or VRF=

diff --git a/src/network/networkd-network.c b/src/network/networkd-network.c
index 8d7795d72c2f19e2cb4f3943bdaf97e2052342d7..1890021f5119ea493071f2151a19b48276672c1d 100644 (file)
--- a/src/network/networkd-network.c
+++ b/src/network/networkd-network.c
@@ -607,14 +607,17 @@ int config_parse_netdev(const char *unit,
 
         switch (kind) {
         case NETDEV_KIND_BRIDGE:
+                network->bridge = netdev_unref(network->bridge);
                 network->bridge = netdev;
 
                 break;
         case NETDEV_KIND_BOND:
+                network->bond = netdev_unref(network->bond);
                 network->bond = netdev;
 
                 break;
         case NETDEV_KIND_VRF:
+                network->vrf = netdev_unref(network->vrf);
                 network->vrf = netdev;
 
                 break;