From 50fb794ef1b049c60671d0c94c11d8954d4a92e0 Mon Sep 17 00:00:00 2001
From: Luke Howard <lukeh@padl.com>
Date: Thu, 3 Mar 2022 10:12:40 +1100
Subject: [PATCH] lib/krb5: re-allow data->length == 0 in krb5_pac_add_buffer()

PAC_TYPE_CLIENT_CLAIMS_INFO and PAC_TYPE_DEVICE_CLAIMS_INFO are
of zero length unless any claims are actually defined.

Signed-off-by: Stefan Metzmacher <metze@samba.org>

Closes: #969
---
 lib/krb5/pac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/krb5/pac.c b/lib/krb5/pac.c
index 7df2ba5ee..49bbcf250 100644
--- a/lib/krb5/pac.c
+++ b/lib/krb5/pac.c
@@ -383,7 +383,7 @@ krb5_pac_add_buffer(krb5_context context, krb5_pac p,
     size_t len, offset, header_end, old_end;
     uint32_t i;
 
-    assert(data->length > 0 && data->data != NULL);
+    assert(data->data != NULL);
 
     len = p->pac->numbuffers;