--- krb5-1.13.1.orig/src/plugins/preauth/pkinit/pkinit_crypto_openssl.c	2015-02-11 21:16:43.000000000 -0600
+++ krb5-1.13.1/src/plugins/preauth/pkinit/pkinit_crypto_openssl.c	2015-05-02 15:39:13.727426998 -0500
@@ -3593,7 +3593,7 @@ pkinit_open_session(krb5_context context
 {
     CK_ULONG i, r;
     unsigned char *cp;
-    size_t label_len;
+    size_t label_len = 0;
     CK_ULONG count = 0;
     CK_SLOT_ID_PTR slotlist;
     CK_TOKEN_INFO tinfo;
