net: sctp: sctp_setsockopt_auth_key: use kzfree instead of kfree
commit8f8623de49e036c4af246a7cfd9abdc1bb95cdea
authorDaniel Borkmann <dborkman@redhat.com>
Fri, 8 Feb 2013 03:04:34 +0000 (8 03:04 +0000)
committerBen Hutchings <ben@decadent.org.uk>
Wed, 20 Feb 2013 03:15:36 +0000 (20 03:15 +0000)
treee7fe4765020c8354777634ca39d3ce2436ea7d2e
parent87deb9f94dedf6f69ccbd52031ddfe39a6ca4cf1
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: Ben Hutchings <ben@decadent.org.uk>
net/sctp/socket.c