diff mbox

[3/3] KEYS: Use memzero_explicit() for secret data

Message ID 148666068016.8529.1064426500365326703.stgit@warthog.procyon.org.uk (mailing list archive)
State New, archived
Headers show

Commit Message

David Howells Feb. 9, 2017, 5:18 p.m. UTC 
From: Dan Carpenter <dan.carpenter@oracle.com>

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>
---

 security/keys/encrypted-keys/encrypted.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


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diff mbox

Patch

diff --git a/security/keys/encrypted-keys/encrypted.c b/security/keys/encrypted-keys/encrypted.c
index d7a4969b2dd3..4fb315cddf5b 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]);
 }