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net: sctp: sctp_setsockopt_auth_key: use kzfree instead of kfree

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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>
This commit is contained in:
Daniel Borkmann 2013-02-08 03:04:34 +00:00 committed by David S. Miller
parent ab54ee80aa
commit 6ba542a291
1 changed files with 1 additions and 1 deletions
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net/sctp/socket.c
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@ -3390,7 +3390,7 @@ static int sctp_setsockopt_auth_key(struct sock *sk,
ret = sctp_auth_set_key(sctp_sk(sk)->ep, asoc, authkey);
out:
kfree(authkey);
kzfree(authkey);
return ret;
}