oss-security - Re: [Dailydave] Linux 2.6.30+/SELinux/RHEL5 test kernel 0day, exploiting the unexploitable

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Date: Wed, 22 Jul 2009 11:04:38 -0400
From: Todd Sabin <tsabin@...online.net>
To: spender@...ecurity.net (Brad Spengler)
Cc: Marcus Meissner <meissner@...e.de>, oss-security@...ts.openwall.com,
 dailydave <dailydave@...ts.immunitysec.com>
Subject: Re: [Dailydave] Linux 2.6.30+/SELinux/RHEL5 test	kernel
 0day, exploiting the unexploitable

spender@...ecurity.net (Brad Spengler) writes:

> (Really there should have been a CVE for the lack of 
> -fno-delete-null-pointer-checks instead of pretending the only problem 
> was /dev/net/tun....

Just as a side note, it seems like gcc is missing an option, to me.
Okay, it can figure out that some NULL pointer checks seem to be
useless, and either optimize them away or leave them in.  What about
issuing a warning?

Where's -Wuseless-null-pointer-check?


Todd

-- 
Todd Sabin                                          <tsabin@...online.net>

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