static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_read_data *data)
{
	struct nfs_server *server = NFS_SERVER(data->header->inode);

	if (nfs4_async_handle_error(task, server, data->args.context->state) == -EAGAIN) {
		rpc_restart_call_prepare(task);
		return -EAGAIN;
	}

	__nfs4_read_done_cb(data);
	if (task->tk_status > 0)
		renew_lease(server, data->timestamp);
	return 0;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.