Double free in i2o_ECPublicKey

PR: 3338

diff --git a/crypto/ec/ec_asn1.c b/crypto/ec/ec_asn1.c
index 145807b611a5aa9efa6b782b2c543d95b8fe3387..e94f34e11b7ca36e0f449a2181745088921fbb2c 100644 (file)
--- a/crypto/ec/ec_asn1.c
+++ b/crypto/ec/ec_asn1.c
@@ -1435,8 +1435,11 @@ int i2o_ECPublicKey(EC_KEY *a, unsigned char **out)
                                *out, buf_len, NULL))
                {
                ECerr(EC_F_I2O_ECPUBLICKEY, ERR_R_EC_LIB);
-               OPENSSL_free(*out);
-               *out = NULL;
+               if (new_buffer)
+                       {
+                       OPENSSL_free(*out);
+                       *out = NULL;
+                       }
                return 0;
                }
        if (!new_buffer)