TFMV-4: Profile Small Key ID encoding vulnerability

Change-Id: I02be66fbcab4125318abd31dbf9800908b94bd13
Signed-off-by: David Hu <david.hu@arm.com>
diff --git a/docs/security/security_advisories/index.rst b/docs/security/security_advisories/index.rst
index 5f03f31..65759ab 100644
--- a/docs/security/security_advisories/index.rst
+++ b/docs/security/security_advisories/index.rst
@@ -8,6 +8,7 @@
     stack_seal_vulnerability
     svc_caller_sp_fetching_vulnerability
     crypto_multi_part_ops_abort_fail
+    profile_small_key_id_encoding_vulnerability
 
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