net: sctp: sctp_setsockopt_auth_key: use kzfree instead of kfree
commit7340fda068b62790d612ebbd3a331a2847895f19
authorDaniel Borkmann <dborkman@redhat.com>
Fri, 8 Feb 2013 03:04:34 +0000 (8 03:04 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 14 Feb 2013 18:47:35 +0000 (14 10:47 -0800)
tree10c1ba3ef522d37ae8ed3d432ecc8178d978752b
parentdaba311aef717d505bc2ebb9a24f96ad15b7f394
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