wanxl: fix info leak in ioctl
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>
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@ -355,6 +355,7 @@ static int wanxl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
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ifr->ifr_settings.size = size; /* data size wanted */
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ifr->ifr_settings.size = size; /* data size wanted */
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return -ENOBUFS;
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return -ENOBUFS;
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}
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}
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memset(&line, 0, sizeof(line));
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line.clock_type = get_status(port)->clocking;
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line.clock_type = get_status(port)->clocking;
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line.clock_rate = 0;
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line.clock_rate = 0;
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line.loopback = 0;
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line.loopback = 0;
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