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authorTudor-Dan Ambarus <tudor.ambarus@microchip.com>2018-03-23 12:42:22 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2018-03-31 01:33:13 +0800
commita664b4b140678d06825467a52885c0e8d46ac0ed (patch)
tree37bf1316b9804f82ce323465d59a00ffcf489f0a /drivers/crypto
parent0e7da29d6c31f897c544c1f7499389111225566f (diff)
downloadlinux-a664b4b140678d06825467a52885c0e8d46ac0ed.tar.bz2
crypto: picoxcell - don't leak pointers to authenc keys
In spacc_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> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
-rw-r--r--drivers/crypto/picoxcell_crypto.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/crypto/picoxcell_crypto.c b/drivers/crypto/picoxcell_crypto.c
index 4ef52c9d72fc..a4df966adbf6 100644
--- a/drivers/crypto/picoxcell_crypto.c
+++ b/drivers/crypto/picoxcell_crypto.c
@@ -499,10 +499,12 @@ static int spacc_aead_setkey(struct crypto_aead *tfm, const u8 *key,
memcpy(ctx->hash_ctx, keys.authkey, keys.authkeylen);
ctx->hash_key_len = keys.authkeylen;
+ memzero_explicit(&keys, sizeof(keys));
return 0;
badkey:
crypto_aead_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
+ memzero_explicit(&keys, sizeof(keys));
return -EINVAL;
}