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usb: misc: iowarrior: fix information leak to userland

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Structure iowarrior_info is copied to userland with padding byted
between "serial" and "revision" fields uninitialized.  It leads to
leaking of contents of kernel stack memory.

Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Cc: stable <stable@kernel.org>
Acked-by: Kees Cook <kees.cook@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Vasiliy Kulikov 2010-11-06 17:41:31 +03:00 committed by Greg Kroah-Hartman
parent 5dc92cf1d0
commit eca67aaeeb
1 changed files with 1 additions and 0 deletions
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drivers/usb/misc/iowarrior.c
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@ -553,6 +553,7 @@ static long iowarrior_ioctl(struct file *file, unsigned int cmd,
/* needed for power consumption */ /* needed for power consumption */
struct usb_config_descriptor *cfg_descriptor = &dev->udev->actconfig->desc; struct usb_config_descriptor *cfg_descriptor = &dev->udev->actconfig->desc;
memset(&info, 0, sizeof(info));
/* directly from the descriptor */ /* directly from the descriptor */
info.vendor = le16_to_cpu(dev->udev->descriptor.idVendor); info.vendor = le16_to_cpu(dev->udev->descriptor.idVendor);
info.product = dev->product_id; info.product = dev->product_id;