Index: head/sys/kern/uipc_socket.c
===================================================================
--- head/sys/kern/uipc_socket.c
+++ head/sys/kern/uipc_socket.c
@@ -2776,7 +2776,12 @@
 			error = sooptcopyin(sopt, &l, sizeof l, sizeof l);
 			if (error)
 				goto bad;
-
+			if (l.l_linger < 0 ||
+			    l.l_linger > USHRT_MAX ||
+			    l.l_linger > (INT_MAX / hz)) {
+				error = EDOM;
+				goto bad;
+			}
 			SOCK_LOCK(so);
 			so->so_linger = l.l_linger;
 			if (l.l_onoff)
@@ -4105,6 +4110,9 @@
 void
 so_linger_set(struct socket *so, int val)
 {
+
+	KASSERT(val >= 0 && val <= USHRT_MAX && val <= (INT_MAX / hz),
+	    ("%s: val %d out of range", __func__, val));
 
 	so->so_linger = val;
 }