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Tue, 9 Apr 2024 21:29:55 GMT Received: from smtpav03.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5BFCA58063; Tue, 9 Apr 2024 21:29:53 +0000 (GMT) Received: from smtpav03.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 923FA58056; Tue, 9 Apr 2024 21:29:52 +0000 (GMT) Received: from li-5cd3c5cc-21f9-11b2-a85c-a4381f30c2f3.ibm.com (unknown [9.61.188.131]) by smtpav03.dal12v.mail.ibm.com (Postfix) with ESMTP; Tue, 9 Apr 2024 21:29:52 +0000 (GMT) Message-ID: Subject: Re: [PATCH v3 00/10] evm: Support signatures on stacked filesystem From: Mimi Zohar To: Stefan Berger , linux-integrity@vger.kernel.org, linux-security-module@vger.kernel.org, linux-unionfs@vger.kernel.org Cc: linux-kernel@vger.kernel.org, paul@paul-moore.com, jmorris@namei.org, serge@hallyn.com, roberto.sassu@huawei.com, amir73il@gmail.com, brauner@kernel.org, miklos@szeredi.hu Date: Tue, 09 Apr 2024 17:29:52 -0400 In-Reply-To: <20240223172513.4049959-1-stefanb@linux.ibm.com> References: <20240223172513.4049959-1-stefanb@linux.ibm.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.28.5 (3.28.5-23.el8_9) X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 4OPDvHSEV7UuX3UR8ykomoVFtY88C32A X-Proofpoint-GUID: NTCCHltqIjanuGsxaH9U6_zCXoa4C0V0 Content-Transfer-Encoding: 7bit X-Proofpoint-UnRewURL: 0 URL was un-rewritten Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-04-09_12,2024-04-09_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 adultscore=0 lowpriorityscore=0 suspectscore=0 impostorscore=0 malwarescore=0 priorityscore=1501 clxscore=1015 phishscore=0 bulkscore=0 spamscore=0 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2404010000 definitions=main-2404090145 On Fri, 2024-02-23 at 12:25 -0500, Stefan Berger wrote: > EVM signature verification on stacked filesystem has recently been > completely disabled by declaring some filesystems as unsupported > (only overlayfs). This series now enables copy-up of "portable > and immutable" signatures on those filesystems and enables the > enforcement of "portable and immultable" as well as the "original" > signatures on previously unsupported filesystem when evm is enabled > with EVM_INIT_X509. HMAC verification and generation remains disabled. > > "Portable and immutable" signatures can be copied up since they are > not created over file-specific metadata, such as UUID or generation. > Instead, they are only covering file metadata such as mode bits, uid, and > gid, that will all be preserved during a copy-up of the file metadata. > > This series is now based on the 'next' branch of Paul Moore's LSM tree and > requires the following two commits from the vfs.misc branch of the vfs git > repo at https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git > > commit 2109cc619e73 ("fs: remove the inode argument to ->d_real() method") > commit c6c14f926fbe ("fs: make file_dentry() a simple accessor") Thanks, Stefan. The patch set is now queued in the next-integrity branch. https://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity.git/ Mimi