linux-kernel - [ 166/184] net: sctp: sctp_auth_key

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Message-Id: <20130604172137.181045987@1wt.eu>
Date:	Tue, 04 Jun 2013 19:24:16 +0200
From:	Willy Tarreau <w@....eu>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Daniel Borkmann <dborkman@...hat.com>,
	Neil Horman <nhorman@...driver.com>,
	Vlad Yasevich <vyasevich@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Willy Tarreau <w@....eu>
Subject: [ 166/184] net: sctp: sctp_auth_key_put: use kzfree instead of

2.6.32-longterm review patch.  If anyone has any objections, please let me know.

------------------
 kfree

From: Daniel Borkmann <dborkman@...hat.com>

[ Upstream commit 586c31f3bf04c290dc0a0de7fc91d20aa9a5ee53 ]

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>
Acked-by: Neil Horman <nhorman@...driver.com>
Acked-by: Vlad Yasevich <vyasevich@...il.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Willy Tarreau <w@....eu>
---
 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 914c419..7363b9f 100644
--- a/net/sctp/auth.c
+++ b/net/sctp/auth.c
@@ -70,7 +70,7 @@ 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);
 	}
 }
-- 
1.7.12.2.21.g234cd45.dirty



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