Date: Wed, 22 Jul 2009 18:30:39 +0200 From: yersinia <yersinia.spiros@...il.com> To: oss-security@...ts.openwall.com Cc: Brad Spengler <spender@...ecurity.net>, Marcus Meissner <meissner@...e.de>, dailydave <dailydave@...ts.immunitysec.com> Subject: Re: Re: [Dailydave] Linux 2.6.30+/SELinux/RHEL5 test kernel 0day, exploiting the unexploitable On Wed, Jul 22, 2009 at 5:04 PM, Todd Sabin<tsabin@...online.net> wrote: > 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? > Coverity opinion on this specific issue http://blog.coverity.com/posts/general/would-you-like-to-know-about-0day-defects-months-in-advance Regards > > Todd > > -- > Todd Sabin <tsabin@...online.net> >
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