Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date: Mon, 23 Jun 2014 12:27:39 -0700
From: Andy Lutomirski <luto@...capital.net>
To: oss-security@...ts.openwall.com
Subject: Re: CVE-2014-4014: Linux kernel user namespace bug

On 06/18/2014 12:16 AM, Sven Kieske wrote:
> Am 17.06.2014 23:47, schrieb Andy Lutomirski:
>> On Tue, Jun 10, 2014 at 2:49 PM, Andy Lutomirski <luto@...capital.net> wrote:
>>> The internal function inode_capable was used inappropriately.
>>> Depending on configuration, this may be usable to escalate privileges.
>>> A cursory inspection of my Fedora box suggests that it is not
>>> vulnerable to the obvious way to exploit this bug.
>>>
>>> The fix should appear in Linus' -master shortly, and it's tagged for
>>> stable.  In the mean time, I've attached it here.
>>>
>>
>> The commit that fixes this is:
>>
>> 23adbe12ef7d3d4195e80800ab36b37bee28cd03
> 
> Do you happen to know in which kernel version
> this bug got introduced?

I don't know, but I wouldn't be surprised if it's been there since user
namespaces were introduced.  I think that user namespace-enabled kernels
are unlikely to be found in the wild before 3.12 or so.

--Andy

Powered by blists - more mailing lists

Your e-mail address:

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.