[PATCH v2 8/9] crypto: qat - don't leak pointers to authenc keys

[Tudor Ambarus]

In qat_alg_aead_init_sessions 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/qat/qat_common/qat_algs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/crypto/qat/qat_common/qat_algs.c 
b/drivers/crypto/qat/qat_common/qat_algs.c
index baffae8..1138e41 100644
--- a/drivers/crypto/qat/qat_common/qat_algs.c
+++ b/drivers/crypto/qat/qat_common/qat_algs.c
@@ -546,11 +546,14 @@ static int qat_alg_aead_init_sessions(struct crypto_aead 
*tfm, const u8 *key,
        if (qat_alg_aead_init_dec_session(tfm, alg, &keys, mode))
                goto error;
 
+       memzero_explicit(&keys, sizeof(keys));
        return 0;
 bad_key:
        crypto_aead_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
+       memzero_explicit(&keys, sizeof(keys));
        return -EINVAL;
 error:
+       memzero_explicit(&keys, sizeof(keys));
        return -EFAULT;
 }
 
-- 
2.9.4