diff --git a/kernel/fork.c b/kernel/fork.c
index 947a8dbce06a..89d7eb67baf5 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -2687,6 +2687,8 @@ pid_t kernel_clone(struct kernel_clone_args *args)
 	    (args->pidfd == args->parent_tid))
 		return -EINVAL;
 
+	if (!valid_signal(args->exit_signal))
+		return -EINVAL;
 	/*
 	 * Determine whether and which event to report to ptracer.  When
 	 * called from kernel_thread or CLONE_UNTRACED is explicitly