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staging/ozwpan: info leak in oz_cdev_ioctl()

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If we're not maxed out then oz_get_pd_list() leaves part of the "list"
struct uninitialized.  We should clear this so that no stack information
is leaked to userspace.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter 2013-04-21 14:07:53 +03:00 committed by Greg Kroah-Hartman
parent eecb262922
commit 2516ffac94
1 changed files with 1 additions and 0 deletions
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drivers/staging/ozwpan/ozcdev.c
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@ -253,6 +253,7 @@ static long oz_cdev_ioctl(struct file *filp, unsigned int cmd,
case OZ_IOCTL_GET_PD_LIST: {
struct oz_pd_list list;
oz_trace("OZ_IOCTL_GET_PD_LIST\n");
memset(&list, 0, sizeof(list));
list.count = oz_get_pd_list(list.addr, OZ_MAX_PDS);
if (copy_to_user((void __user *)arg, &list,
sizeof(list)))