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From: Russell Coker <russell@coker.com.au>
To: "selinux-refpolicy@vger.kernel.org"
	<selinux-refpolicy@vger.kernel.org>,
	"Sugar, David" <dsugar@owlcyberdefense.com>
Subject: Re: fs_rw_tmpfs_files(fwupd_t)
Date: Sat, 13 Jun 2026 12:53:53 +1000	[thread overview]
Message-ID: <2386758.tgW7RDIVbh@xev> (raw)
In-Reply-To: <BNAP110MB2223F319362D6D91F04C86DEC218A@BNAP110MB2223.NAMP110.PROD.OUTLOOK.COM>

On Saturday, 13 June 2026 01:15:33 AEST Sugar, David wrote:
> The file in this case is a memfd file (created with memfd_create).  You CAN
> transition this from tmpfs_t to a private type (i.e. fwupd_tmpfs_t).  I
> just dealt with something like this for fapolicyd:
> https://github.com/SELinuxProject/refpolicy/pull/1141  Though I never saw
> denials for the create, the transition will work.

Thanks for the information.

This seems like a kernel bug.  The domains in question aren't permitted to 
create tmpfs_t objects but the domains in question can create them anyway.

-- 
My Main Blog         http://etbe.coker.com.au/
My Documents Blog    http://doc.coker.com.au/




      parent reply	other threads:[~2026-06-13  2:54 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-12 14:27 fs_rw_tmpfs_files(fwupd_t) Russell Coker
2026-06-12 17:51 ` fs_rw_tmpfs_files(fwupd_t) Christopher J. PeBenito
     [not found] ` <BNAP110MB2223F319362D6D91F04C86DEC218A@BNAP110MB2223.NAMP110.PROD.OUTLOOK.COM>
2026-06-13  2:53   ` Russell Coker [this message]

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