diff --git a/auth/kerberos/gssapi_pac.c b/auth/kerberos/gssapi_pac.c
index dadae1afa26..a17405211d0 100644
--- a/auth/kerberos/gssapi_pac.c
+++ b/auth/kerberos/gssapi_pac.c
@@ -80,8 +80,24 @@ NTSTATUS gssapi_obtain_pac_blob(TALLOC_CTX *mem_ctx,
 	NTSTATUS status;
 	OM_uint32 gss_maj, gss_min;
 #ifdef HAVE_GSS_GET_NAME_ATTRIBUTE
-	gss_buffer_desc pac_buffer;
-	gss_buffer_desc pac_display_buffer;
+/*
+ * gss_get_name_attribute() in MIT krb5 1.10.0 can return unintialized pac_display_buffer
+ * and later gss_release_buffer() will crash on attempting to release it.
+ *
+ * So always initialize the buffer descriptors.
+ *
+ * See following links for more details:
+ * http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=658514
+ * http://krbdev.mit.edu/rt/Ticket/Display.html?user=guest&pass=guest&id=7087
+ */
+	gss_buffer_desc pac_buffer = {
+		.value = NULL,
+		.length = 0
+	};
+	gss_buffer_desc pac_display_buffer = {
+		.value = NULL,
+		.length = 0
+	};
 	gss_buffer_desc pac_name = {
 		.value = discard_const("urn:mspac:"),
 		.length = sizeof("urn:mspac:")-1