The public list is a general available list open to all. It mostly follows the security feed on the HPCsec website where we aim to notify the HPC community of notable vulnerabilities affecting HPC systems and environments. We also aim to provide notification of upcoming vulnerabilities identified by HPCsec in advance of their publication (pre-advisories) in order to allow affected parties to plan their remediation. However, details within pre-advisories will always be limited.
If you operate or build HPC systems/software/services you should consider subscribing to the private feed where we aim to share greater detail on upcoming advisories which we would not typically share publicly.