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Date: Thu, 29 Apr 2010 15:23:37 -0400 (EDT)
From: Josh Bressers <>
Cc: Paul Gortmaker <>,
        +security-linux <>,
        Jason Wessel <>,
        Wu Fei <>, coley <>
Subject: Re: CVE request - Linux Kernel KGDB/ppc issue

Please use CVE-2010-1446 for this.



----- "Hui Zhu" <> wrote:

> Hi All,
> The problem is that if KGDB is enabled on a powerpc board, a
> test that checks if a page is user or kernel is bypassed.
> This means that a user can write to arbitrary kernel address space.
> Upon further investigation, we found that kernels older than
> the v2.6.30-rc1 release have the same problem for non-booke
> ppc chips (74xx, 8641D), so we need two patches for kernels
> up to that date, and then one patch for ones after that date.
> Thanks,
> Hui

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