Openwall GNU/*/Linux - a small security-enhanced Linux distro for servers
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Sun, 26 Jul 2009 11:18:05 +0800
From: Eugene Teo <eugene@...hat.com>
To: oss-security@...ts.openwall.com
Subject: Re: md raid null ptr dereference (when sysfs is writable)

Marcus Meissner wrote:
> Hi,
> 
> http://xorl.wordpress.com/2009/07/21/linux-kernel-md-driver-null-pointer-dereference/
> 
> 2.6.30 stable:
> http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.30.y.git;a=commit;h=3c92900d9a4afb176d3de335dc0da0198660a244
> mainline:
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=b8d966efd9a46a9a35beac50cbff6e30565125ef
> 
> While not directly exploitable, its just needs write access to the sysfs files
> to get exploited, so I guess this warrants a CVE number.

Note that the default permission for this sysfs file is 644. It can be
triggered if you are a local privileged user.

Thanks, Eugene

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.