From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Andrey Konovalov <andreyknvl@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Jaejoong Kim <climbbb.kim@gmail.com>,
USB list <linux-usb@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Dmitry Vyukov <dvyukov@google.com>,
Kostya Serebryany <kcc@google.com>,
syzkaller <syzkaller@googlegroups.com>
Subject: Re: usb/core: slab-out-of-bounds read in cdc_parse_cdc_header
Date: Thu, 21 Sep 2017 09:31:54 +0200 [thread overview]
Message-ID: <20170921073154.GA11294@kroah.com> (raw)
In-Reply-To: <CAAeHK+y0HbzoNqcG_hZ+T==0MnFkxtMYZd_aUQ-R3gqK+VQcnw@mail.gmail.com>
On Wed, Sep 20, 2017 at 04:45:08PM +0200, Andrey Konovalov wrote:
> Hi!
>
> I've got the following crash while fuzzing the kernel with syzkaller.
>
> On commit ebb2c2437d8008d46796902ff390653822af6cc4 (Sep 18).
>
> It looks like cdc_parse_cdc_header() doesn't validate buflen before
> accessing buffer[1], buffer[2] and so on. The only check present is
> while (buflen > 0).
Ugh, you are right, let me go work on a patch, thanks for the report...
next prev parent reply other threads:[~2017-09-21 7:31 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-20 14:45 usb/core: slab-out-of-bounds read in cdc_parse_cdc_header Andrey Konovalov
2017-09-21 7:31 ` Greg Kroah-Hartman [this message]
2017-09-21 8:04 ` Greg Kroah-Hartman
2017-09-21 13:51 ` Andrey Konovalov
2017-09-21 14:07 ` Greg Kroah-Hartman
2017-09-21 14:12 ` Andrey Konovalov
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