From: Nils Larsch <nils@openssl.org>
Date: Mon, 13 Mar 2006 23:12:08 +0000 (+0000)
Subject: fix error found by coverity: check if ctx is != NULL before calling BN_CTX_end()
X-Git-Tag: OpenSSL_0_9_8b~13
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=b7a80146f45dc47ee2a7e33298d1fa4c7110cca4;p=oweals%2Fopenssl.git

fix error found by coverity: check if ctx is != NULL before calling BN_CTX_end()
---

diff --git a/crypto/dh/dh_key.c b/crypto/dh/dh_key.c
index cc17c8851b..79984e13bc 100644
--- a/crypto/dh/dh_key.c
+++ b/crypto/dh/dh_key.c
@@ -217,8 +217,11 @@ static int compute_key(unsigned char *key, const BIGNUM *pub_key, DH *dh)
 
 	ret=BN_bn2bin(tmp,key);
 err:
-	BN_CTX_end(ctx);
-	BN_CTX_free(ctx);
+	if (ctx != NULL)
+		{
+		BN_CTX_end(ctx);
+		BN_CTX_free(ctx);
+		}
 	return(ret);
 	}
 
diff --git a/crypto/ec/ec2_smpl.c b/crypto/ec/ec2_smpl.c
index a9f7c9d378..5cd1eac41f 100644
--- a/crypto/ec/ec2_smpl.c
+++ b/crypto/ec/ec2_smpl.c
@@ -281,7 +281,8 @@ int ec_GF2m_simple_group_check_discriminant(const EC_GROUP *group, BN_CTX *ctx)
 	ret = 1;
 
 err:
-	BN_CTX_end(ctx);
+	if (ctx != NULL)
+		BN_CTX_end(ctx);
 	if (new_ctx != NULL)
 		BN_CTX_free(new_ctx);
 	return ret;
diff --git a/crypto/ec/ec_check.c b/crypto/ec/ec_check.c
index f22c5641a8..0e316b4b3f 100644
--- a/crypto/ec/ec_check.c
+++ b/crypto/ec/ec_check.c
@@ -113,7 +113,8 @@ int EC_GROUP_check(const EC_GROUP *group, BN_CTX *ctx)
 	ret = 1;
 
 err:
-	BN_CTX_end(ctx);
+	if (ctx != NULL)
+		BN_CTX_end(ctx);
 	if (new_ctx != NULL)
 		BN_CTX_free(new_ctx);
 	if (point)
diff --git a/crypto/ec/ecp_smpl.c b/crypto/ec/ecp_smpl.c
index 75296a3673..4d26f8bdf6 100644
--- a/crypto/ec/ecp_smpl.c
+++ b/crypto/ec/ecp_smpl.c
@@ -336,7 +336,8 @@ int ec_GFp_simple_group_check_discriminant(const EC_GROUP *group, BN_CTX *ctx)
 	ret = 1;
 
 err:
-	BN_CTX_end(ctx);
+	if (ctx != NULL)
+		BN_CTX_end(ctx);
 	if (new_ctx != NULL)
 		BN_CTX_free(new_ctx);
 	return ret;
diff --git a/crypto/rsa/rsa_gen.c b/crypto/rsa/rsa_gen.c
index 383d6095f5..742f8b18e5 100644
--- a/crypto/rsa/rsa_gen.c
+++ b/crypto/rsa/rsa_gen.c
@@ -183,8 +183,11 @@ err:
 		RSAerr(RSA_F_RSA_BUILTIN_KEYGEN,ERR_LIB_BN);
 		ok=0;
 		}
-	BN_CTX_end(ctx);
-	BN_CTX_free(ctx);
+	if (ctx != NULL)
+		{
+		BN_CTX_end(ctx);
+		BN_CTX_free(ctx);
+		}
 
 	return ok;
 	}