From 57a1a66348b493b0f9450e084a3e9a3df2bbcd54 Mon Sep 17 00:00:00 2001
From: Luke Howard <lukeh@padl.com>
Date: Mon, 9 Aug 2021 14:45:12 +1000
Subject: [PATCH] krb5: default to client realm in _krb5_get_krbtgt

If _krb5_get_krbtgt() is called with a NULL realm, use the realm of the ccache
client
---
 lib/krb5/get_cred.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/krb5/get_cred.c b/lib/krb5/get_cred.c
index 8dfe3170c..e31b7de01 100644
--- a/lib/krb5/get_cred.c
+++ b/lib/krb5/get_cred.c
@@ -306,6 +306,9 @@ _krb5_get_krbtgt(krb5_context context,
     if (ret)
 	return ret;
 
+    if (realm == NULL)
+	realm = tmp_cred.client->realm;
+
     ret = krb5_make_principal(context,
 			      &tmp_cred.server,
 			      realm,