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<H1>[Mageia-dev] NVIDIA CVE, mga1: update driver, or patch and break CUDA debugger?</H1>
<B>Pascal Terjan</B>
<A HREF="mailto:mageia-dev%40mageia.org?Subject=Re%3A%20%5BMageia-dev%5D%20NVIDIA%20CVE%2C%20mga1%3A%20update%20driver%2C%0A%20or%20patch%20and%20break%20CUDA%20debugger%3F&In-Reply-To=%3CCA%2BCX%2Bbg0QxAV6J8X-P0ORPyrok5Pyfqv5CPWautwehu2Fe6TcA%40mail.gmail.com%3E"
TITLE="[Mageia-dev] NVIDIA CVE, mga1: update driver, or patch and break CUDA debugger?">pterjan at gmail.com
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<I>Wed Apr 11 16:47:27 CEST 2012</I>
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<PRE>On Wed, Apr 11, 2012 at 15:27, Anssi Hannula <<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">anssi at mageia.org</A>> wrote:
><i> Hi all!
</I>><i>
</I>><i> We'll have to apply a patch for CVE-2012-0946 (access to arbitrary
</I>><i> system memory by any user) for cauldron and mga1.
</I>><i>
</I>><i> However, the security fix (patch to the nvidia kernel interface layer)
</I>><i> will break CUDA debugger using libcuda older than 295.40.
</I>><i>
</I>><i> While I can upgrade cauldron driver (which contains libcuda) to 295.40,
</I>><i> mga1 will be left with two options:
</I>><i> a) Apply patch, informing users that CUDA debugger will cease to
</I>><i>   function unless they upgrade their NVIDIA driver. However, as we have
</I>><i>   no backports, the remaining (non-system-breaking) option to upgrade
</I>><i>   their driver is to use <A HREF="http://onse.fi/nvidia-mgabuild/">http://onse.fi/nvidia-mgabuild/</A> , but I don't
</I>><i>   think it is very nice to link to non-official page from an advisory,
</I>><i>   right?
</I>><i>
</I>><i> b) Upgrade our MGA1 driver from 275.09.07 to 295.40 ("long-lived branch
</I>><i>   release") as well. We have
</I>><i>   previously shipped an update from 270.41.19 to 275.09.07 for MGA1
</I>><i>   (that was due to an important stability bugfix). I'm not aware of
</I>><i>   any blockers for this.
</I>
I would vote for b provided more research about known regressions from
275 to 295 (like dropping support for some devices)
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