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From:   Meng Yu <yumeng18@huawei.com>
To:     <herbert@gondor.apana.org.au>, <davem@davemloft.net>
CC:     <linux-crypto@vger.kernel.org>, <xuzaibo@huawei.com>,
        <wangzhou1@hisilicon.com>, <yumeng18@huawei.com>,
        <linux-kernel@vger.kernel.org>, <shenyang39@huawei.com>
Subject: [PATCH] crypto: hisilicon/hpre - rsa key should not be empty
Date:   Fri, 26 Mar 2021 14:13:32 +0800
Message-ID: <1616739212-7751-1-git-send-email-yumeng18@huawei.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

We should ensure key is not empty before we set key.

Signed-off-by: Meng Yu <yumeng18@huawei.com>
---
 drivers/crypto/hisilicon/hpre/hpre_crypto.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/crypto/hisilicon/hpre/hpre_crypto.c b/drivers/crypto/hisilicon/hpre/hpre_crypto.c
index 53068d2..7cf7d80 100644
--- a/drivers/crypto/hisilicon/hpre/hpre_crypto.c
+++ b/drivers/crypto/hisilicon/hpre/hpre_crypto.c
@@ -1093,6 +1093,9 @@ static int hpre_rsa_setpubkey(struct crypto_akcipher *tfm, const void *key,
 	struct hpre_ctx *ctx = akcipher_tfm_ctx(tfm);
 	int ret;
 
+	if (!key || !keylen)
+		return -EINVAL;
+
 	ret = crypto_akcipher_set_pub_key(ctx->rsa.soft_tfm, key, keylen);
 	if (ret)
 		return ret;
@@ -1106,6 +1109,9 @@ static int hpre_rsa_setprivkey(struct crypto_akcipher *tfm, const void *key,
 	struct hpre_ctx *ctx = akcipher_tfm_ctx(tfm);
 	int ret;
 
+	if (!key || !keylen)
+		return -EINVAL;
+
 	ret = crypto_akcipher_set_priv_key(ctx->rsa.soft_tfm, key, keylen);
 	if (ret)
 		return ret;
-- 
2.8.1