From 3ee2611677e7e9f90e270f3ee4f343c9d3d86835 Mon Sep 17 00:00:00 2001
From: Pauli <pauli@openssl.org>
Date: Fri, 17 Jun 2022 11:02:52 +1000
Subject: Coverity: fix 1506297: negative returns

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/18587)
---
 crypto/dsa/dsa_ameth.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/crypto/dsa/dsa_ameth.c b/crypto/dsa/dsa_ameth.c
index 1da67485e8..482b9e1e0a 100644
--- a/crypto/dsa/dsa_ameth.c
+++ b/crypto/dsa/dsa_ameth.c
@@ -198,6 +198,11 @@ static int dsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
 
     ASN1_STRING_clear_free(prkey);
 
+    if (dplen <= 0) {
+        ERR_raise(ERR_LIB_DSA, DSA_R_BN_ERROR);
+        goto err;
+    }
+
     if (!PKCS8_pkey_set0(p8, OBJ_nid2obj(NID_dsa), 0,
                          V_ASN1_SEQUENCE, params, dp, dplen)) {
         OPENSSL_clear_free(dp, dplen);
-- 
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