
A few links for Linux security alerts and notices:
Ubuntu Security Notices:
Debian Security Information:
http://www.debian.org/security
Red Hat Security Alerts:
https://access.redhat.com/security/updates/active
CentOS Security Response:
http://lists.centos.org/pipermail/centos-announce
Fedora Package Announcements:
https://lists.fedoraproject.org/mailman/listinfo/Package-announce
https://admin.fedoraproject.org/updates
Gentoo Linux Security Announcements:
http://www.gentoo.org/security/en/glsa/index.xml
Suse Security Announcements:
http://lists.opensuse.org/opensuse-security-announce
And the mega-sweet lwn.net Security Alerts Database:
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