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Message-ID: <4D52BA63.6050209@redhat.com>
Date: Thu, 10 Feb 2011 00:01:39 +0800
From: Eugene Teo <eugene@...hat.com>
To: oss-security@...ts.openwall.com
CC: Dan Rosenberg <dan.j.rosenberg@...il.com>
Subject: Re: CVE request: kernel: btrfs heap overflow
On 02/09/2011 11:49 PM, Dan Rosenberg wrote:
> 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).
Ok, I'm just asking. Please use CVE-2011-0696.
Eugene
> 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
>>
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