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crypto: ixp4xx - don't leak pointers to authenc keys

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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.ambarus@microchip.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tudor-Dan Ambarus 2018-03-23 12:42:21 +02:00 committed by Herbert Xu
parent eb52653175
commit 0e7da29d6c
1 changed files with 2 additions and 0 deletions
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2
drivers/crypto/ixp4xx_crypto.c
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@ -1167,9 +1167,11 @@ static int aead_setkey(struct crypto_aead *tfm, const u8 *key,
ctx->authkey_len = keys.authkeylen; ctx->authkey_len = keys.authkeylen;
ctx->enckey_len = keys.enckeylen; ctx->enckey_len = keys.enckeylen;
memzero_explicit(&keys, sizeof(keys));
return aead_setup(tfm, crypto_aead_authsize(tfm)); return aead_setup(tfm, crypto_aead_authsize(tfm));
badkey: badkey:
crypto_aead_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); crypto_aead_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
memzero_explicit(&keys, sizeof(keys));
return -EINVAL; return -EINVAL;
} }