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 cc17c8851b691daf2798cad861f56b03adb9cbb1..79984e13bc927111d08b81ddb2b98a389f78356b 100644 (file)
--- 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 a9f7c9d378060d195e33127afd257d2ff3c44132..5cd1eac41fc33bb1bf435f4fc6d606870b0c8f85 100644 (file)
--- 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 f22c5641a8177dc8bb3317a60a424230e00a8a12..0e316b4b3ff075234fcd62791d2995442710be01 100644 (file)
--- 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 75296a36733089fb555ed2bc703a044863e4c58d..4d26f8bdf6921f4ae9a9e5be06fbde3f54b55628 100644 (file)
--- 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 383d6095f57c989522d1aa6ec860d7f8a7f10173..742f8b18e5addabe76b5f67f07845eeac0b9a89a 100644 (file)
--- 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;
        }