From: Adam Langley <agl@chromium.org>
Date: Thu, 21 Feb 2013 22:11:55 +0000 (-0500)
Subject: Don't SEGFAULT when trying to export a public DSA key as a private key.
X-Git-Tag: master-post-reformat~1290
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=a54a61e7a94466f4dc1d663a4297bca562d1a5ac;p=oweals%2Fopenssl.git

Don't SEGFAULT when trying to export a public DSA key as a private key.
---

diff --git a/crypto/dsa/dsa_ameth.c b/crypto/dsa/dsa_ameth.c
index 376156ec5e..5f6e6f595f 100644
--- a/crypto/dsa/dsa_ameth.c
+++ b/crypto/dsa/dsa_ameth.c
@@ -307,6 +307,12 @@ static int dsa_priv_encode(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pkey)
 	unsigned char *dp = NULL;
 	int dplen;
 
+	if (!pkey->pkey.dsa->priv_key)
+		{
+		DSAerr(DSA_F_DSA_PRIV_ENCODE,DSA_R_MISSING_PARAMETERS);
+		goto err;
+		}
+
 	params = ASN1_STRING_new();
 
 	if (!params)