From eedbb6bb8e640fe0e3d9afa91e874d544f9afa04 Mon Sep 17 00:00:00 2001
From: cuihongpeng <cuihongpeng@tsinghua-wx.org>
Date: Thu, 23 Aug 2018 17:58:24 +0800
Subject: [PATCH] sm2: fix cv free error, in o2i_SM2CiphertextValue() function

---
 crypto/sm2/sm2_oct.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
 mode change 100644 => 100755 crypto/sm2/sm2_oct.c

diff --git a/crypto/sm2/sm2_oct.c b/crypto/sm2/sm2_oct.c
old mode 100644
new mode 100755
index 6f951e77..f9ca4cfb
--- a/crypto/sm2/sm2_oct.c
+++ b/crypto/sm2/sm2_oct.c
@@ -274,7 +274,9 @@ SM2CiphertextValue *o2i_SM2CiphertextValue(const EC_GROUP *group,
 	ret = cv;
 
 end:
-	SM2CiphertextValue_free(cv);
+	if ((cv != *pout) && (!ret))
+		SM2CiphertextValue_free(cv);
+
 	EC_POINT_free(point);
 	BN_CTX_free(bn_ctx);
 	return ret;