linux-kernel - Re: [PATCH 0/2] ima: add dont_audit and fs

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: <ef7c07585e41c8afbb2b97df98fd47c9374b15cb.camel@linux.ibm.com>
Date: Tue, 30 Sep 2025 06:23:47 -0400
From: Mimi Zohar <zohar@...ux.ibm.com>
To: Jann Horn <jannh@...gle.com>, Roberto Sassu <roberto.sassu@...wei.com>,
        Dmitry Kasatkin <dmitry.kasatkin@...il.com>,
        Eric Snowberg
 <eric.snowberg@...cle.com>
Cc: Frank Dinoff <fdinoff@...gle.com>, linux-kernel@...r.kernel.org,
        linux-integrity@...r.kernel.org
Subject: Re: [PATCH 0/2] ima: add dont_audit and fs_subtype to policy
 language

On Fri, 2025-09-26 at 01:45 +0200, Jann Horn wrote:
> This series adds a "dont_audit" action that cancels out following
> "audit" actions (as we already have for other action types), and also
> adds an "fs_subtype" that can be used to distinguish between FUSE
> filesystems.
> 
> With these two patches applied, as a toy example, you can use the
> following policy:
> ```
> dont_audit fsname=fuse fs_subtype=sshfs
> audit func=BPRM_CHECK fsname=fuse
> ```
> 
> I have tested that with this policy, executing a binary from a
> "fuse-zip" FUSE filesystem results in an audit log entry:
> ```
> type=INTEGRITY_RULE msg=audit([...]): file="/home/user/ima/zipmount/usr/bin/echo" hash="sha256:1d82e8[...]
> ```
> while executing a binary from an "sshfs" FUSE filesystem does not
> generate any audit log entries.
> 
> Signed-off-by: Jann Horn <jannh@...gle.com>


Thanks, Jann.  The patches look fine.  Assuming the "toy" test program creates
and mounts the fuse filesystems, not just loads the IMA policy rules, could you
share it?

thanks,

Mimi