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Date: Wed, 28 May 2014 21:06:40 -0400
From: Steve Grubb <>
Cc: Andy Lutomirski <>
Subject: Re: CVE request: Linux kernel DoS with syscall auditing

On Wednesday, May 28, 2014 02:45:59 PM Andy Lutomirski wrote:
> Issuing a system call with a random large number will OOPS, depending
> on configuration.  A configuration that will enable this bug is:
> # auditctl -a exit,always -S open
> No privilege whatsoever is required to trigger the OOPS.

Do you have more information about this? I don't get an oops and I run with 
the audit system on all the time.

> It's possible that this can be extended to more than just a DoS --
> with some care and willingness to exploit timing attacks, this is a
> read of arbitrary single bits in kernel memory.

What platform? Where do the arbitrary bits go? What syscall are we talking 

There is a linux-audit mail list which seems to not have any emails about this 
problem. That is really the best place to discuss any issues with this 
subsystem and get it fixed.


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