From 55c0dd8adda8f25a0bdc7b58a2dbe70b59a3dfbe Mon Sep 17 00:00:00 2001 From: Fuqian Huang Date: Wed, 15 May 2019 08:42:48 +0800 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- drivers/atm/iphase.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/atm/iphase.c b/drivers/atm/iphase.c index 5278c57dce73..302cf0ba1600 100644 --- a/drivers/atm/iphase.c +++ b/drivers/atm/iphase.c @@ -2767,12 +2767,6 @@ static int ia_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg) case MEMDUMP: { switch (ia_cmds.sub_cmd) { - case MEMDUMP_DEV: - if (!capable(CAP_NET_ADMIN)) return -EPERM; - if (copy_to_user(ia_cmds.buf, iadev, sizeof(IADEV))) - return -EFAULT; - ia_cmds.status = 0; - break; case MEMDUMP_SEGREG: if (!capable(CAP_NET_ADMIN)) return -EPERM; tmps = (u16 __user *)ia_cmds.buf; -- 2.30.2