A practical approach to learning Linux vulnerabilities

Operating systems based on the Linux kernel are widespread in the microcomputer, mobile, server, and supercomputer market. They have become an integral part of commercial and government information systems in which confidential information, personal data and trade secrets are stored and processed. Thus, the Linux kernel is a critical object in such systems, because its compromise leads to the compromise of the entire system or an substantial part of it. In most cases, an attacker compromises the kernel by exploiting vulnerabilities, despite the protection mechanisms built into the kernel. And in order to find and eliminate them, an information security professional must have the appropriate skills. Such skills can only be learned through practice. In this paper, we propose a practice-oriented approach to exploring the variety of Linux kernel vulnerabilities in order to acquire the skills to find, analyze and fix them by an information security professional. The proposed approach made it possible to transfer the laboratory practice to online learning during the COVID-19 pandemic.