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    Subject[ 038/143] wanxl: fix info leak in ioctl
    2.6.32-longterm review patch.  If anyone has any objections, please let me know.

    ------------------

    From: =?latin1?q?Salva=20Peir=F3?= <speiro@ai2.upv.es>

    [ Upstream commit 2b13d06c9584b4eb773f1e80bbaedab9a1c344e1 ]

    The wanxl_ioctl() code fails to initialize the two padding bytes of
    struct sync_serial_settings after the ->loopback member. Add an explicit
    memset(0) before filling the structure to avoid the info leak.

    Signed-off-by: Salva Peiró <speiro@ai2.upv.es>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Willy Tarreau <w@1wt.eu>
    ---
    drivers/net/wan/wanxl.c | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/drivers/net/wan/wanxl.c b/drivers/net/wan/wanxl.c
    index daee8a0..b52b378 100644
    --- a/drivers/net/wan/wanxl.c
    +++ b/drivers/net/wan/wanxl.c
    @@ -354,6 +354,7 @@ static int wanxl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
    ifr->ifr_settings.size = size; /* data size wanted */
    return -ENOBUFS;
    }
    + memset(&line, 0, sizeof(line));
    line.clock_type = get_status(port)->clocking;
    line.clock_rate = 0;
    line.loopback = 0;
    --
    1.7.12.2.21.g234cd45.dirty


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