oss-security - Re: CVE request - Linux kernel through 4.6.2 allows escalade privileges via IP6T_SO_SET

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Date: Thu, 29 Sep 2016 15:45:26 +0200
From: Greg KH <greg@...ah.com>
To: oss-security@...ts.openwall.com
Cc: "cve-assign@...re.org" <cve-assign@...re.org>
Subject: Re: CVE request - Linux kernel through 4.6.2 allows
 escalade privileges via IP6T_SO_SET_REPLACE compat setsockopt call

On Thu, Sep 29, 2016 at 07:43:35AM +0000, 张谦 wrote:
> Hi there,
> 
> I found a memory corruption vulnerabiliry in Linux kernel through 4.6.2, and I
> have a working exploit to escalade privileges which requires the ip6_tables
> module to be loaded, that it is properly blocked on all up-to-date versions.
> 
> Due to the number of users running vulnerable code(not update to 4.7 or
> higher), and that this exploit is only available to security researchers and
> kernel packagers upon request but that I don't want it to spread.
> 
>  
> 
> I have reported this issue to Linux kernel official and they have already fixed
> this.

Note, this was fixed many months ago, in May of 2016, and went into the
stable kernel updates in June, 2016.  Any distro that updated to the
stable kernel updates received this fix then.

Any distro that hasn't updated their kernel since then, well, you need
to revaluate your trust of such a distro :)

thanks,

greg k-h

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