linux-kernel - Re: [PATCH 1/1] cifs: potential memory leaks when parsing mnt opts

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Message-ID: <20150322032340.GD5170@taesoo.org>
Date:	Sat, 21 Mar 2015 23:23:40 -0400
From:	Taesoo Kim <taesoo@...ech.edu>
To:	Scott Lovenberg <scott.lovenberg@...il.com>
Cc:	Taesoo Kim <tsgatesv@...il.com>,
	"sfrench@...ba.org" <sfrench@...ba.org>,
	linux-cifs <linux-cifs@...r.kernel.org>,
	samba-technical@...ts.samba.org,
	LKML <linux-kernel@...r.kernel.org>, changwoo@...ech.edu,
	sanidhya@...ech.edu, blee@...ech.edu, csong84@...ech.edu
Subject: Re: [PATCH 1/1] cifs: potential memory leaks when parsing mnt opts

On 03/21/15 at 09:10pm, Scott Lovenberg wrote:
> On Sat, Mar 21, 2015 at 6:08 PM, Taesoo Kim <tsgatesv@...il.com> wrote:
> 
> > Althouhg mkfs.cifs in userspace performs a bit of sanitization
> > (e.g., forcing one user option), current implementation is not
> > robust. Other options such as iocharset and domainanme are similary
> > vulnerable.
> >
> 
> I assume you mean mount.cifs?  :-) Anyways, good catch.

Right. FYI, I've tried mangling password field (e.g., pass=a,user=A
&c); Skimming through the code (just a few minutes), there are a few
potential places that don't sanitize its string, unlike passwd. But
don't have much time to play with for now :)

Thanks,
Taesoo
 
> -- 
> Peace and Blessings,
> -Scott.
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