From eca67aaeebd6e5d22b0d991af1dd0424dc703bfb Mon Sep 17 00:00:00 2001 From: Vasiliy Kulikov Date: Sat, 6 Nov 2010 17:41:31 +0300 Subject: [PATCH] usb: misc: iowarrior: fix information leak to userland 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 Cc: stable Acked-by: Kees Cook Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/iowarrior.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c index 375664198776..c9078e4e1f4d 100644 --- a/drivers/usb/misc/iowarrior.c +++ b/drivers/usb/misc/iowarrior.c @@ -553,6 +553,7 @@ static long iowarrior_ioctl(struct file *file, unsigned int cmd, /* needed for power consumption */ struct usb_config_descriptor *cfg_descriptor = &dev->udev->actconfig->desc; + memset(&info, 0, sizeof(info)); /* directly from the descriptor */ info.vendor = le16_to_cpu(dev->udev->descriptor.idVendor); info.product = dev->product_id; -- 2.20.1