unix_diag: fix info leak
[ Upstream commit 6865d1e834be84ddd5808d93d5035b492346c64a ] When filling the netlink message we miss to wipe the pad field, therefore leak one byte of heap memory to userland. Fix this by setting pad to 0. Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -124,6 +124,7 @@ static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, struct unix_diag_r
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rep->udiag_family = AF_UNIX;
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rep->udiag_type = sk->sk_type;
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rep->udiag_state = sk->sk_state;
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rep->pad = 0;
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rep->udiag_ino = sk_ino;
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sock_diag_save_cookie(sk, rep->udiag_cookie);
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