diff --git a/fs/exec.c b/fs/exec.c
index 263b1f67f1f8..f419a512de63 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1161,6 +1161,20 @@ int begin_new_exec(struct linux_binprm * bprm)
 	if (retval)
 		goto out;
 
+	/*
+	 * We have to apply CLOEXEC before we change whether the process is
+	 * dumpable (in setup_new_exec) to avoid a race with a process in userspace
+	 * trying to access the should-be-closed file descriptors of a process
+	 * undergoing exec(2).
+	 *
+	 * This can block on filesystem ->flush() handlers, including waiting
+	 * for FUSE daemons, so do it before exec_mmap takes the
+	 * exec_update_lock.
+	 * This must happen after the point of no return, and after unsharing
+	 * the FD table.
+	 */
+	do_close_on_exec(me->files);
+
 	/*
 	 * Must be called _before_ exec_mmap() as bprm->mm is
 	 * not visible until then. Doing it here also ensures
@@ -1211,14 +1225,6 @@ int begin_new_exec(struct linux_binprm * bprm)
 
 	clear_syscall_work_syscall_user_dispatch(me);
 
-	/*
-	 * We have to apply CLOEXEC before we change whether the process is
-	 * dumpable (in setup_new_exec) to avoid a race with a process in userspace
-	 * trying to access the should-be-closed file descriptors of a process
-	 * undergoing exec(2).
-	 */
-	do_close_on_exec(me->files);
-
 	if (bprm->secureexec) {
 		/* Make sure parent cannot signal privileged process. */
 		me->pdeath_signal = 0;