docs: policy for systemd-security subscriptions

Replaces #14325.

diff --git a/docs/SECURITY.md b/docs/SECURITY.md
index f38674e54e76e7e8517c5ffdb951782d6a142acd..bd2915bab6095f569ed42d1ff71a447ff00d1a1c 100644 (file)
--- a/docs/SECURITY.md
+++ b/docs/SECURITY.md
@@ -9,3 +9,5 @@ layout: default
 If you discover a security vulnerability, we'd appreciate a non-public disclosure. systemd developers can be contacted privately on the **[systemd-security@redhat.com](mailto:systemd-security@redhat.com) mailing list**. The disclosure will be coordinated with distributions.
 
 (The [issue tracker](https://github.com/systemd/systemd/issues) and [systemd-devel mailing list](https://lists.freedesktop.org/mailman/listinfo/systemd-devel) are fully public.)
+
+Subscription to the systemd-security mailing list is open to **regular systemd contributors and people working in the security teams of various distributions**. Those conditions should be backed by publicly accessible information (ideally, a track of posts and commits from the mail address in question). If you fall into one of those categories and wish to be subscribed, submit a **[subscription request](https://www.redhat.com/mailman/listinfo/systemd-security)**.