Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755198Ab0LHAeb (ORCPT ); Tue, 7 Dec 2010 19:34:31 -0500 Received: from kroah.org ([198.145.64.141]:54769 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755057Ab0LHAe3 (ORCPT ); Tue, 7 Dec 2010 19:34:29 -0500 X-Mailbox-Line: From gregkh@clark.site Tue Dec 7 16:06:41 2010 Message-Id: <20101208000641.124164973@clark.site> User-Agent: quilt/0.48-11.2 Date: Tue, 07 Dec 2010 16:04:15 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Vasiliy Kulikov Subject: [16/44] usb: misc: sisusbvga: fix information leak to userland In-Reply-To: <20101208003205.GA4286@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1115 Lines: 35 2.6.27-stable review patch. If anyone has any objections, please let us know. ------------------ From: Vasiliy Kulikov commit 5dc92cf1d0b4b0debbd2e333b83f9746c103533d upstream. Structure sisusb_info is copied to userland with "sisusb_reserved" field uninitialized. It leads to leaking of contents of kernel stack memory. Signed-off-by: Vasiliy Kulikov Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/sisusbvga/sisusb.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/usb/misc/sisusbvga/sisusb.c +++ b/drivers/usb/misc/sisusbvga/sisusb.c @@ -3031,6 +3031,7 @@ sisusb_ioctl(struct file *file, unsigned #else x.sisusb_conactive = 0; #endif + memset(x.sisusb_reserved, 0, sizeof(x.sisusb_reserved)); if (copy_to_user((void __user *)arg, &x, sizeof(x))) retval = -EFAULT; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/