atm: iphase: Avoid copying pointers to user space.
Remove the MEMDUMP_DEV case in ia_ioctl to avoid copy pointers to user space. Signed-off-by: Fuqian Huang <huangfq.daxian@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -2767,12 +2767,6 @@ static int ia_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg)
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case MEMDUMP:
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{
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switch (ia_cmds.sub_cmd) {
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case MEMDUMP_DEV:
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if (!capable(CAP_NET_ADMIN)) return -EPERM;
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if (copy_to_user(ia_cmds.buf, iadev, sizeof(IADEV)))
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return -EFAULT;
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ia_cmds.status = 0;
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break;
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case MEMDUMP_SEGREG:
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if (!capable(CAP_NET_ADMIN)) return -EPERM;
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tmps = (u16 __user *)ia_cmds.buf;
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