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Date: Thu, 24 Feb 2011 09:25:19 +0800
From: Eugene Teo <>
CC: Josh Bressers <>, Timo Warns <>
Subject: Re: CVE request: kernel: fs/partitions: Kernel heap
 overflow via corrupted LDM partition tables

On 02/24/2011 03:59 AM, Josh Bressers wrote:
> ----- Original Message -----
>> The kernel automatically evaluates partition tables of storage devices.
>> The code for evaluating LDM partitions (in fs/partitions/ldm.c) contains
>> a bug that allows to overflow the kernel heap. It may be possible to
>> escalate privileges by exploiting this bug.
>> (This bug is distinct from the LDM bug reported by Eugene Teo on
>> 2011-02-23.)
>> This should affect both, 2.4 and 2.6 kernel. As a prerequisite,
>> CONFIG_LDM_PARTITION needs to be set.
> Can you point to a commit message or something else that is public? It's
> not clear how this differs from Eugene's request.

As far as I can tell, it's not public yet. Timo will follow-up once his 
patch is accepted.

Eugene Teo / Red Hat Security Response Team

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