linux-kernel - Re: [PATCH 2/2] ima: add policy support for the new file open MAY

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <5c7a4ef6-db0b-431a-b745-987176fa41ed@linux.microsoft.com>
Date:   Wed, 29 Apr 2020 10:22:59 -0700
From:   Lakshmi Ramasubramanian <nramas@...ux.microsoft.com>
To:     Mimi Zohar <zohar@...ux.ibm.com>, linux-integrity@...r.kernel.org
Cc:     Mickael Salaun <mic@...ikod.net>, Steve Grubb <sgrubb@...hat.com>,
        Jann Horn <jannh@...gle.com>,
        linux-security-module@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] ima: add policy support for the new file open
 MAY_OPENEXEC flag

On 4/29/20 6:38 AM, Mimi Zohar wrote:
> The kernel has no way of differentiating between a file containing data
> or code being opened by an interpreter.  The proposed RESOLVE_MAYEXEC
> openat2(2) flag bridges this gap by defining and enabling the MAY_OPENEXEC
> flag.
> 
> This patch adds IMA policy support for the new MAY_OPENEXEC flag.
> 
> Example:
> measure func=FILE_CHECK mask=^MAY_OPENEXEC
> appraise func=FILE_CHECK appraise_type=imasig mask=^MAY_OPENEXEC
> 
> Signed-off-by: Mimi Zohar <zohar@...ux.ibm.com>

Reviewed.