LINUX
Open Source Vulnerabilities Database (OSV)
- https://osv.dev/list
- https://osv.dev/list?q=&ecosystem=Red+Hat
- https://osv.dev/list?q=&ecosystem=Rocky+Linux
- https://osv.dev/list?q=&ecosystem=AlmaLinux
- https://osv.dev/list?q=&ecosystem=Ubuntu
- https://osv.dev/list?q=&ecosystem=SUSE
- https://osv.dev/list?q=&ecosystem=openSUSE
RHEL Security page
Rocky Linux security advisories (RLSA)
AlmaLinux Errata
Ubuntu Security Notices
WINDOWS
Microsoft Security Response Center
OpenCVE