netdev - [PATCH net 2/2] net: sctp: sctp_auth_key_put: use kzfree instead of kfree

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Date:	Thu,  7 Feb 2013 11:55:37 +0100
From:	Daniel Borkmann <dborkman@...hat.com>
To:	vyasevich@...il.com
Cc:	davem@...emloft.net, netdev@...r.kernel.org,
	linux-sctp@...r.kernel.org
Subject: [PATCH net 2/2] net: sctp: sctp_auth_key_put: use kzfree instead of kfree

For sensitive data like keying material, it is common practice to zero
out keys before returning the memory back to the allocator. Thus, use
kzfree instead of kfree.

Signed-off-by: Daniel Borkmann <dborkman@...hat.com>
---
 net/sctp/auth.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/sctp/auth.c b/net/sctp/auth.c
index 55f1b06..69fcd6d 100644
--- a/net/sctp/auth.c
+++ b/net/sctp/auth.c
@@ -71,7 +71,7 @@ void sctp_auth_key_put(struct sctp_auth_bytes *key)
 		return;
 
 	if (atomic_dec_and_test(&key->refcnt)) {
-		kfree(key);
+		kzfree(key);
 		SCTP_DBG_OBJCNT_DEC(keys);
 	}
 }
-- 
1.7.11.7

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