Fix uninitialised pointer dereference
diff --git a/ChangeLog b/ChangeLog
index a547e26..cae2e05 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,11 @@
 
 = Version 1.2.z released not yet
 
+Security
+   * Fix remotely-triggerable uninitialised pointer dereference caused by
+     crafted X.509 certificate (TLS server is not affected if it doesn't ask
+     for a client certificate) (found using Codenomicon Defensics).
+
 Changes
    * Blind RSA private operations even when POLARSSL_RSA_NO_CRT is defined.