linux-kernel - Re: [PATCH v3] x86/ima: require signed kernel modules

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: <20190215170144.GH11489@garbanzo.do-not-panic.com>
Date:   Fri, 15 Feb 2019 09:01:44 -0800
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     Mimi Zohar <zohar@...ux.ibm.com>
Cc:     linux-integrity@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        linux-kernel@...r.kernel.org, Jessica Yu <jeyu@...nel.org>,
        David Howells <dhowells@...hat.com>,
        Seth Forshee <seth.forshee@...onical.com>,
        "Bruno E . O . Meneguele" <bmeneg@...hat.com>
Subject: Re: [PATCH v3] x86/ima: require signed kernel modules

On Fri, Feb 15, 2019 at 11:50:18AM -0500, Mimi Zohar wrote:
> Have the IMA architecture specific policy require signed kernel modules
> on systems with secure boot mode enabled; and coordinate the different
> signature verification methods, so only one signature is required.
> 
> Requiring appended kernel module signatures may be configured, enabled
> on the boot command line, or with this patch enabled in secure boot
> mode.  This patch defines set_module_sig_enforced().
> 
> To coordinate between appended kernel module signatures and IMA
> signatures, only define an IMA MODULE_CHECK policy rule if
> CONFIG_MODULE_SIG is not enabled.  A custom IMA policy may still define
> and require an IMA signature.
> 
> Signed-off-by: Mimi Zohar <zohar@...ux.ibm.com>

Reviewed-by: Luis Chamberlain <mcgrof@...nel.org>

  Luis