diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c
index 25cd724ade184ac452463d18e134d7e3ae469503..e2c46889d5fab614dbeb6b26a8a696d778709b8d 100644
--- a/io_uring/kbuf.c
+++ b/io_uring/kbuf.c
@@ -346,6 +346,8 @@ int io_provide_buffers_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe
 	tmp = READ_ONCE(sqe->off);
 	if (tmp > USHRT_MAX)
 		return -E2BIG;
+	if (tmp + p->nbufs >= USHRT_MAX)
+		return -EINVAL;
 	p->bid = tmp;
 	return 0;
 }