linux-kernel - [PATCH 4.16 099/161] crypto: atmel-aes

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Message-Id: <20180524093030.271884133@linuxfoundation.org>
Date:   Thu, 24 May 2018 11:38:44 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Antoine Tenart <antoine.tenart@...tlin.com>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.16 099/161] crypto: atmel-aes - fix the keys zeroing on errors

4.16-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Antoine Tenart <antoine.tenart@...tlin.com>

[ Upstream commit 5d804a5157dbaa64872a675923ae87161165c66b ]

The Atmel AES driver uses memzero_explicit on the keys on error, but the
variable zeroed isn't the right one because of a typo. Fix this by using
the right variable.

Fixes: 89a82ef87e01 ("crypto: atmel-authenc - add support to authenc(hmac(shaX), Y(aes)) modes")
Signed-off-by: Antoine Tenart <antoine.tenart@...tlin.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@...rochip.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/crypto/atmel-aes.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/crypto/atmel-aes.c
+++ b/drivers/crypto/atmel-aes.c
@@ -2155,7 +2155,7 @@ static int atmel_aes_authenc_setkey(stru
 
 badkey:
 	crypto_aead_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
-	memzero_explicit(&key, sizeof(keys));
+	memzero_explicit(&keys, sizeof(keys));
 	return -EINVAL;
 }