Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Wed, 9 Feb 2011 10:49:35 -0500
From: Dan Rosenberg <dan.j.rosenberg@...il.com>
To: Eugene Teo <eugene@...hat.com>
Cc: oss-security@...ts.openwall.com
Subject: Re: CVE request: kernel: btrfs heap overflow

I'm not aware of any distributions that support 2.6.37 kernels, but as
far as I know this doesn't affect CVE eligibility (please correct me
if I'm wrong).

-Dan

On Wed, Feb 9, 2011 at 10:20 AM, Eugene Teo <eugene@...hat.com> wrote:
> On 02/09/2011 10:27 PM, Dan Rosenberg wrote:
>>
>> Commit bf5fc093c5b625e4259203f1cee7ca73488a5620 refactored
>> btrfs_ioctl_space_info() and introduced security issues.  Since they
>> were all introduced at once and fixed at the same time, one CVE should
>> suffice.
>>
>> Due to integer truncation or a signedness error in a typecasted
>> comparison, an integer overflow in an allocation size calculation, and
>> a failure to properly check bounds when copying data, it was possible
>> for an unprivileged user to cause a denial-of-service due to writing
>> to an invalid pointer (ZERO_SIZE_PTR) or cause a kernel heap overflow.
>>
>> -Dan
>>
>> [1] http://marc.info/?l=linux-kernel&m=129726078708425&w=2
>
> Commit bf5fc093c was introduced very recently - v2.6.37-rc1 Sept last year.
> Do we have commercially supported kernels that are affected by this?
>
> Thanks, Eugene
>

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.