net: sctp: sctp_setsockopt_auth_key: use kzfree instead of kfree
authorDaniel Borkmann <dborkman@redhat.com>
Fri, 8 Feb 2013 03:04:34 +0000 (03:04 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 14 Feb 2013 18:48:33 +0000 (10:48 -0800)
commit86e4935c889c0e4aadd3f7cf86a22ea09f959600
tree6b88755a37fc2fa6e9cbd1b9e4701d792613a1eb
parent2a64537939d88f55564c276c61b5c4660636d9d0
net: sctp: sctp_setsockopt_auth_key: use kzfree instead of kfree

[ Upstream commit 6ba542a291a5e558603ac51cda9bded347ce7627 ]

In sctp_setsockopt_auth_key, we create a temporary copy of the user
passed shared auth key for the endpoint or association and after
internal setup, we free it right away. Since it's sensitive data, we
should zero out the key before returning the memory back to the
allocator. Thus, use kzfree instead of kfree, just as we do in
sctp_auth_key_put().

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/sctp/socket.c