From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Henrik Rydberg <rydberg@euromail.se>,
Ping Cheng <pingc@wacom.com>,
Peter Hutterer <peter.hutterer@who-t.net>,
Aristeu Rozanski <aris@ruivo.org>,
linux-input@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: Re: [patch] Input: potential info leak in uiput_ff_upload_to_user()
Date: Fri, 23 Sep 2011 07:30:41 +0000 [thread overview]
Message-ID: <20110923073041.GB613@core.coreip.homeip.net> (raw)
In-Reply-To: <20110923062240.GG4387@elgon.mountain>
On Fri, Sep 23, 2011 at 09:22:40AM +0300, Dan Carpenter wrote:
> Smatch has a new check for Rosenberg type information leaks where
> structs are copied to the user with uninitialized stack data in them.
>
> The issue here is that struct uinput_ff_upload_compat has a hole in
> it.
>
> struct uinput_ff_upload_compat {
> int request_id; /* 0 4 */
> int retval; /* 4 4 */
> struct ff_effect_compat effect; /* 8 0 */
>
> /* XXX 44 bytes hole, try to pack */
>
> struct ff_effect_compat old; /* 52 0 */
44 bytes... doubtful...
Thanks.
--
Dmitry
WARNING: multiple messages have this Message-ID (diff)
From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Henrik Rydberg <rydberg@euromail.se>,
Ping Cheng <pingc@wacom.com>,
Peter Hutterer <peter.hutterer@who-t.net>,
Aristeu Rozanski <aris@ruivo.org>,
linux-input@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: Re: [patch] Input: potential info leak in uiput_ff_upload_to_user()
Date: Fri, 23 Sep 2011 00:30:41 -0700 [thread overview]
Message-ID: <20110923073041.GB613@core.coreip.homeip.net> (raw)
In-Reply-To: <20110923062240.GG4387@elgon.mountain>
On Fri, Sep 23, 2011 at 09:22:40AM +0300, Dan Carpenter wrote:
> Smatch has a new check for Rosenberg type information leaks where
> structs are copied to the user with uninitialized stack data in them.
>
> The issue here is that struct uinput_ff_upload_compat has a hole in
> it.
>
> struct uinput_ff_upload_compat {
> int request_id; /* 0 4 */
> int retval; /* 4 4 */
> struct ff_effect_compat effect; /* 8 0 */
>
> /* XXX 44 bytes hole, try to pack */
>
> struct ff_effect_compat old; /* 52 0 */
44 bytes... doubtful...
Thanks.
--
Dmitry
next prev parent reply other threads:[~2011-09-23 7:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-23 6:22 [patch] Input: potential info leak in uiput_ff_upload_to_user() Dan Carpenter
2011-09-23 6:22 ` Dan Carpenter
2011-09-23 7:30 ` Dmitry Torokhov [this message]
2011-09-23 7:30 ` Dmitry Torokhov
2011-09-23 7:31 ` Dan Carpenter
2011-09-23 7:31 ` Dan Carpenter
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