[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date: Tue, 21 Apr 2009 10:42:28 +0800
From: Eugene Teo <eugene@...hat.com>
To: oss-security@...ts.openwall.com
CC: "Steven M. Christey" <coley@...us.mitre.org>
Subject: Re: CVE request: kernel: 'kill sig -1' must only apply
to caller's PID namespace
Eugene Teo wrote:
> Eugene Teo wrote:
>> I came across this while reviewing some older upstream patches.
>>
>> Apparently, it was possible to run kill <sig> -1 to kill processes in
>> all PID namespaces, and break the isolation of namespaces. The expected
>> behaviour for this is to only kill processes in its own hierarchy. The
>> fix uses task_pid_vnr() to check if the process is outside of the
>> caller's namespace before killing.
>
> I am still able to reproduce the problem even after applying this
> upstream patch (commit d25141a8). I'm still figuring out what other
Ok, you will need to make sure you have commit 44c4e1b2 too. I have
tested this on 2.6.24.7 with these two patches, and the problem is fixed.
https://bugzilla.redhat.com/show_bug.cgi?id=496031#c14
Thanks, Eugene
--
Eugene Teo / Red Hat Security Response Team
Powered by blists - more mailing lists
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.
