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From: Weili Qian <qianweili@huawei.com>
To: <herbert@gondor.apana.org.au>, <davem@davemloft.net>
Cc: <linux-kernel@vger.kernel.org>, <linux-crypto@vger.kernel.org>,
	<wangzhou1@hisilicon.com>, <liulongfang@huawei.com>,
	Weili Qian <qianweili@huawei.com>
Subject: [PATCH] crypto: hisilicon/hpre - fix memory leak in hpre_curve25519_src_init()
Date: Sat, 11 Dec 2021 16:17:19 +0800	[thread overview]
Message-ID: <20211211081719.30329-1-qianweili@huawei.com> (raw)

hpre_curve25519_src_init() allocates memory for 'ptr' before calling
memcmp(). If memcmp() returns 0, the function will return '-EINVAL'
without freeing memory.

Signed-off-by: Weili Qian <qianweili@huawei.com>
---
 drivers/crypto/hisilicon/hpre/hpre_crypto.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/crypto/hisilicon/hpre/hpre_crypto.c b/drivers/crypto/hisilicon/hpre/hpre_crypto.c
index 0f1724d355b8..97d54c1465c2 100644
--- a/drivers/crypto/hisilicon/hpre/hpre_crypto.c
+++ b/drivers/crypto/hisilicon/hpre/hpre_crypto.c
@@ -1862,7 +1862,7 @@ static int hpre_curve25519_src_init(struct hpre_asym_request *hpre_req,
 	 */
 	if (memcmp(ptr, p, ctx->key_sz) == 0) {
 		dev_err(dev, "gx is p!\n");
-		return -EINVAL;
+		goto err;
 	} else if (memcmp(ptr, p, ctx->key_sz) > 0) {
 		hpre_curve25519_src_modulo_p(ptr);
 	}
-- 
2.33.0


             reply	other threads:[~2021-12-11  8:22 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-11  8:17 Weili Qian [this message]
2021-12-17  8:39 ` [PATCH] crypto: hisilicon/hpre - fix memory leak in hpre_curve25519_src_init() Herbert Xu

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