Index: sys/netpfil/pf/pf_ioctl.c
===================================================================
--- sys/netpfil/pf/pf_ioctl.c
+++ sys/netpfil/pf/pf_ioctl.c
@@ -2643,6 +2643,10 @@
 			error = EINVAL;
 			break;
 		}
+		if (pp->addr.addr.p.dyn != NULL) {
+			error = EINVAL;
+			break;
+		}
 		pa = malloc(sizeof(*pa), M_PFRULE, M_WAITOK);
 		bcopy(&pp->addr, pa, sizeof(struct pf_pooladdr));
 		if (pa->ifname[0])
@@ -2742,6 +2746,10 @@
 			error = EINVAL;
 			break;
 		}
+		if (pca->addr.addr.p.dyn != NULL) {
+			error = EINVAL;
+			break;
+		}
 
 		if (pca->action != PF_CHANGE_REMOVE) {
 #ifndef INET