From 155e29dd681fd6d55ebda7f7f004849481aebdbc Mon Sep 17 00:00:00 2001
From: Karel Miko <karel.miko@gmail.com>
Date: Wed, 20 Sep 2017 11:58:32 +0200
Subject: [PATCH] dsa_verify_hash must set stat=0 on any error

---
 src/pk/dsa/dsa_verify_hash.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/pk/dsa/dsa_verify_hash.c b/src/pk/dsa/dsa_verify_hash.c
index baac9ee..5c6d19c 100644
--- a/src/pk/dsa/dsa_verify_hash.c
+++ b/src/pk/dsa/dsa_verify_hash.c
@@ -101,6 +101,9 @@ int dsa_verify_hash(const unsigned char *sig, unsigned long siglen,
    ltc_asn1_list sig_seq[2];
    unsigned long reallen = 0;
 
+   LTC_ARGCHK(stat != NULL);
+   *stat = 0; /* must be set before the first return */
+
    if ((err = mp_init_multi(&r, &s, NULL)) != CRYPT_OK) {
       return err;
    }