Unfortunately, very few Linux distributions do this, which means that many systems are inherently insecure due to outdated kernels.

To avoid this issue, make sure to regularly update your kernel to ensure that all known security problems have been fixed before they’re reported. This is a simple but effective way to keep your system secure and prevent any potential vulnerabilities from being exploited by attackers.

Another important best practice for Linux security is to be aware of the potential for small bugs to turn into major security issues at the kernel level. As Greg Kroah-Hartman, a Google Linux kernel engineer, has observed: “any bug has the potential of being a security issue.” This means that even minor subsystems like TTY can have killer security holes if they’re not properly addressed and fixed over time.

To avoid this problem, it’s essential to stay up-to-date with all known security issues and patches for your system. By doing so, you can ensure that any potential vulnerabilities are quickly identified and addressed before they become a major issue.

In terms of specific best practices for Linux security, there are several key steps you can take to protect yourself:

1. Use the latest long-term stable (LTS) kernel.
2. Regularly update your system to ensure that all known security problems have been fixed before they’re reported.
3. Stay up-to-date with all known security issues and patches for your system.
4. Be aware of the potential for small bugs to turn into major security issues at the kernel level.
5. Use a secure password policy, including strong passwords and regular changes.
6. Limit access to sensitive data and systems using role-based access control (RBAC) or other similar mechanisms.
7. Implement network segmentation and firewall rules to prevent unauthorized access from external sources.
8. Regularly backup your system and data to ensure that you can recover in the event of a security breach or other disaster.
9. Use secure communication protocols, such as HTTPS or SSH, whenever possible to protect sensitive information during transmission.
10. Keep all software up-to-date with the latest patches and updates to prevent any potential vulnerabilities from being exploited by attackers.