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Date: Thu, 24 Nov 2011 17:21:01 +0100
From: Tavis Ormandy <>
Subject: Re: Please REJECT CVE-2011-4112

Petr Matousek <> wrote:

> Hi,
> could you please reject CVE-2011-4112 as it is not a security bug.
> Reference:
> Thank you,

Unrelated, but if it did not require CAP_NET_ADMIN, would you have
considered it a security bug?

I was under the impression that there was general agreement that NULL derefs
that are handled gracefully are not security bugs any more.

Is this because you're setting panic_on_oops?

I wonder if we should create a separate panic_on_null, as I agree
panic_on_oops is probably the correct default so as to avoid transitioning
into a potentially exploitable state. I think I'm reasonably confident in
the handling of NULL derefs (or am I deluded? I havn't thought about it a
great deal).


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