[PATCH v2 6/9] crypto: ixp4xx - don't leak pointers to authenc keys

[Tudor Ambarus]

In ixp4xx's aead_setkey we save pointers to the authenc keys in a
local variable of type struct crypto_authenc_keys and we don't
zeroize it after use. Fix this and don't leak pointers to the
authenc keys.

Signed-off-by: Tudor Ambarus <tudor.amba...@microchip.com>
---
 drivers/crypto/ixp4xx_crypto.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/crypto/ixp4xx_crypto.c b/drivers/crypto/ixp4xx_crypto.c
index 717a266..27f7dad 100644
--- a/drivers/crypto/ixp4xx_crypto.c
+++ b/drivers/crypto/ixp4xx_crypto.c
@@ -1167,9 +1167,11 @@ static int aead_setkey(struct crypto_aead *tfm, const u8 
*key,
        ctx->authkey_len = keys.authkeylen;
        ctx->enckey_len = keys.enckeylen;
 
+       memzero_explicit(&keys, sizeof(keys));
        return aead_setup(tfm, crypto_aead_authsize(tfm));
 badkey:
        crypto_aead_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
+       memzero_explicit(&keys, sizeof(keys));
        return -EINVAL;
 }
 
-- 
2.9.4