From: "Christopher J. PeBenito" <cpebenito@tresys.com>
To: "Václav Ovsík" <vaclav.ovsik@i.cz>
Cc: SELinux List <selinux@tycho.nsa.gov>,
Martin Orr <martin@martinorr.name>,
Stephen Smalley <sds@tycho.nsa.gov>,
Chris PeBenito <pebenito@gentoo.org>,
Eamon Walsh <ewalsh@tycho.nsa.gov>
Subject: Re: refpolicy: syscall init_module needs sys_nice & setsched
Date: Thu, 22 May 2008 14:29:46 -0400 [thread overview]
Message-ID: <1211480986.11188.152.camel@gorn> (raw)
In-Reply-To: <20080522122919.GA32485@bobek.pm.i.cz>
On Thu, 2008-05-22 at 14:29 +0200, Václav Ovsík wrote:
> while playing with current Debian Sid, Linux 2.6.25 I noticed, denials
> on modprobe:
>
> May 22 07:26:11 sid kernel: [ 9.195474] type=1400 audit(1211433957.144:3): avc: denied { sys_nice } for pid=801 comm="modprobe" capability=23 scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=capability
> May 22 07:26:11 sid kernel: [ 9.198362] type=1400 audit(1211433957.144:3): avc: denied { setsched } for pid=801 comm="modprobe" scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:system_r:kernel_t:s0 tclass=process
>
> After a longer investigation with git-bisect I found, that above
> denials appeared after kernel commit:
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=85653af7d488702165eba72c6c1dd0250fae4e70
> A function stop_machine() (from kernel/stop_machine.c) was changed in
> this commit in such a way, that system calls init_module()
> & delete_module() needs sys_nice & setsched. I did'n try to understand
> code too much (consequences of this commit).
>
> I found in the history of SE Linux mailing list Martin Orr sent a patch
> already. (The correspondence attached.)
> The Martins patch is available at URL:
> http://www.martinorr.name/selinux/patches/151_module_setsched
I added that and comments as to why its needed.
--
Chris PeBenito
Tresys Technology, LLC
(410) 290-1411 x150
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prev parent reply other threads:[~2008-05-22 18:29 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-18 3:14 Xorg modprobe denials Eamon Walsh
2007-12-18 3:47 ` Chris PeBenito
2007-12-18 13:34 ` Stephen Smalley
2007-12-18 13:57 ` Stephen Smalley
2007-12-19 21:11 ` Martin Orr
2008-01-03 15:30 ` Christopher J. PeBenito
2008-01-03 17:25 ` Martin Orr
2008-05-22 12:29 ` refpolicy: syscall init_module needs sys_nice & setsched Václav Ovsík
2008-05-22 18:29 ` Christopher J. PeBenito [this message]
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