KEYS: Use memzero_explicit() for secret data
I don't think GCC has figured out how to optimize the memset() away, but
they might eventually so let's future proof this code a bit.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
diff --git a/security/keys/encrypted-keys/encrypted.c b/security/keys/encrypted-keys/encrypted.c
index d7a4969..4fb315c 100644
--- a/security/keys/encrypted-keys/encrypted.c
+++ b/security/keys/encrypted-keys/encrypted.c
@@ -985,7 +985,7 @@ static void encrypted_destroy(struct key *key)
if (!epayload)
return;
- memset(epayload->decrypted_data, 0, epayload->decrypted_datalen);
+ memzero_explicit(epayload->decrypted_data, epayload->decrypted_datalen);
kfree(key->payload.data[0]);
}