Index: sys/netinet/cc/cc_cdg.c
===================================================================
--- sys/netinet/cc/cc_cdg.c
+++ sys/netinet/cc/cc_cdg.c
@@ -500,7 +500,7 @@
 static inline int
 prob_backoff(long qtrend)
 {
-	int backoff, idx, p;
+	unsigned int backoff, idx, p;
 
 	backoff = (qtrend > ((MAXGRAD * V_cdg_exp_backoff_scale) << D_P_E));
 
@@ -512,8 +512,8 @@
 			idx = qtrend;
 
 		/* Backoff probability proportional to rate of queue growth. */
-		p = (INT_MAX / (1 << EXP_PREC)) * probexp[idx];
-		backoff = (random() < p);
+		p = (UINT_MAX / (1 << EXP_PREC)) * probexp[idx];
+		backoff = (arc4random() < p);
 	}
 
 	return (backoff);
Index: sys/netinet/cc/cc_chd.c
===================================================================
--- sys/netinet/cc/cc_chd.c
+++ sys/netinet/cc/cc_chd.c
@@ -84,8 +84,8 @@
  */
 #define	CC_CHD_DELAY	0x02000000
 
-/* Largest possible number returned by random(). */
-#define	RANDOM_MAX	INT_MAX
+/* Largest possible number returned by arc4random(). */
+#define	RANDOM_MAX	UINT_MAX
 
 static void	chd_ack_received(struct cc_var *ccv, uint16_t ack_type);
 static void	chd_cb_destroy(struct cc_var *ccv);
@@ -158,7 +158,7 @@
 {
 	unsigned long p, rand;
 
-	rand = random();
+	rand = arc4random();
 
 	if (qdly < V_chd_qthresh) {
 		chd_data->loss_compete = 0;
Index: sys/netinet/cc/cc_hd.c
===================================================================
--- sys/netinet/cc/cc_hd.c
+++ sys/netinet/cc/cc_hd.c
@@ -79,8 +79,8 @@
 
 #include <netinet/khelp/h_ertt.h>
 
-/* Largest possible number returned by random(). */
-#define	RANDOM_MAX	INT_MAX
+/* Largest possible number returned by arc4random(). */
+#define	RANDOM_MAX	UINT_MAX
 
 static void	hd_ack_received(struct cc_var *ccv, uint16_t ack_type);
 static int	hd_mod_init(void);
@@ -119,7 +119,7 @@
 			p = (RANDOM_MAX / 100) * V_hd_pmax;
 	}
 
-	return (random() < p);
+	return (arc4random() < p);
 }
 
 /*