diff --git a/security/tomoyo/common.c b/security/tomoyo/common.c
index 5c7b059a332a..d25752eb8790 100644
--- a/security/tomoyo/common.c
+++ b/security/tomoyo/common.c
@@ -2656,6 +2656,9 @@ ssize_t tomoyo_write_control(struct tomoyo_io_buffer *head,
 		return -EINVAL;
 	if (mutex_lock_interruptible(&head->io_sem))
 		return -EINTR;
+	if (avail_len << PAGE_SHIFT > MAX_PAGE_ORDER)
+		return -EINVAL;
+
 	cp0 = head->write_buf;
 	head->read_user_buf_avail = 0;
 	idx = tomoyo_read_lock();