From owner-freebsd-security@FreeBSD.ORG  Sat Apr 28 21:27:47 2012
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Date: Sat, 28 Apr 2012 23:27:46 +0200 (CEST)
From: Richard Kojedzinszky <krichy@tvnetwork.hu>
To: freebsd-security@freebsd.org
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Subject: Re: mac_mls
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I forgot to mention that for 8.3 the code is still the same, so it seemts 
to crash there as well.

regards,


Kojedzinszky Richard
Euronet Magyarorszag Informatikai Zrt.

On Sat, 28 Apr 2012, Richard Kojedzinszky wrote:

> Date: Sat, 28 Apr 2012 23:24:06 +0200 (CEST)
> From: Richard Kojedzinszky <krichy@tvnetwork.hu>
> To: freebsd-security@freebsd.org
> Subject: mac_mls
> 
> Dear fbsd team,
>
> I am using 9.0, and found that running atop, and exiting from it when the 
> kernel is compiled with MAC_MLS (or the module is loaded), then a panic 
> raises, I think the following patch could fix it (as in mac_biba);
>
> --- sys/security/mac_mls/mac_mls.c.orig	2012-04-28 23:19:45.000000000 +0200
> +++ sys/security/mac_mls/mac_mls.c	2012-04-28 23:20:13.000000000 +0200
> @@ -2028,6 +2028,9 @@
> 	if (!mls_enabled)
> 		return (0);
>
> +	if (vplabel == NULL)
> +		return (0);
> +
> 	subj = SLOT(cred->cr_label);
> 	obj = SLOT(vplabel);
>
> Regards,
>
> Kojedzinszky Richard
> Euronet Magyarorszag Informatikai Zrt.
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