[PATCH] Documentation: security: add cross references with SECURITY.md

[Ahmad Fatoum]

We have a top-level SECURITY.md, because it's handled specially by the
Github Web UI. Additionally, we have a security chapter in the
documentation, so add references between the two for easier
discoverability.

Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
---
 Documentation/user/security.rst | 7 +++++++
 SECURITY.md                     | 5 +++++
 2 files changed, 12 insertions(+)

diff --git a/Documentation/user/security.rst b/Documentation/user/security.rst
index 5beedfc9a5bf..cc15c8b512b2 100644
--- a/Documentation/user/security.rst
+++ b/Documentation/user/security.rst
@@ -170,3 +170,10 @@ a compiled-in RSA public key. Board code should read the JSON Web Token
 (e.g., from a raw partition on a USB mass storage device), verify the
 serial number claim within against the board's actual serial number and only
 then unlock any debugging functionality.
+
+Security Policy
+---------------
+
+For general information on supported versions and how to report security
+vulnerabilities, refer to the top-level
+`SECURITY.md <https://github.com/barebox/barebox/security/policy>`_ document.
diff --git a/SECURITY.md b/SECURITY.md
index 476ab3186e04..9dd19d73d0aa 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -12,3 +12,8 @@ Compatibility with old kernels is maintained over barebox releases.
 
 Please report security vulnerabilities to security at barebox.org.
 We will work with the reporter to create a fix and to coordinate the disclosure.
+
+## Securing barebox
+
+Refer to the [Security Considerations](https://www.barebox.org/doc/latest/user/security.html)
+chapter of the documentation for information on how to configure barebox securely.
-- 
2.39.5