From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from canpmsgout09.his.huawei.com (canpmsgout09.his.huawei.com [113.46.200.224]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 531A938E8C4; Mon, 29 Jun 2026 06:36:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=113.46.200.224 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782714997; cv=none; b=QbWD9Z+U0kwXvnvt8HrCfL13a0RT48nB8+/0I0bursq135K1ZfVAqJUhdxvJLogzC0zmLEhBrUVstbsewIe++Y5GMxjGKFoebeIaVirXpIgMQf5T0wYopNg2avfBgmQ0Vr3C7sYbgzD4BNAwgk7OmgBKulWngV35uZabIlmEmWY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782714997; c=relaxed/simple; bh=dbn89cqNncvD/YGttjdzMR40/PFeyf0xzyIYbKZorpg=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=IIhmk2WfqM3s50o2K7D/XvFHvqccfBom4nm/p5xixpAKPUNWKNfqJF2thgaruoNTZHHYdwbAa0CoIfF+U4nEzEPPZr7lrRSUlMUWFEraKhpTrigMfyyyfkN1Pv8vqNYx596+wyj1SWE5I7mVCpeEhEVgvufS05wOiLVtB4XIwo8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b=ZA6ERwOb; arc=none smtp.client-ip=113.46.200.224 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=huawei.com header.i=@huawei.com header.b="ZA6ERwOb" dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=g7I0MmSFE5vIlYE0PpCqKellJZf4i4LqXVJT/+dD1XQ=; b=ZA6ERwObo9jmqQWb2W4WvfyoTFm/T6eeF0AZ1pIICCG+qlJ1seSDpwJpaKQgK4WS3SIHaPbVa Ek/ohFtF9zXvqJV18wB1bMTVGVNMfynUpanRlkNyD+fASuJr/E+4tpRocRzxT4yvfkTvogx/hqk +oxXxWxX+YAsbbO7K+0BduE= Received: from mail.maildlp.com (unknown [172.19.163.15]) by canpmsgout09.his.huawei.com (SkyGuard) with ESMTPS id 4gpbsD0qVrz1d09x; Mon, 29 Jun 2026 14:26:40 +0800 (CST) Received: from dggemv705-chm.china.huawei.com (unknown [10.3.19.32]) by mail.maildlp.com (Postfix) with ESMTPS id 110C740592; Mon, 29 Jun 2026 14:35:47 +0800 (CST) Received: from kwepemq200017.china.huawei.com (7.202.195.228) by dggemv705-chm.china.huawei.com (10.3.19.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Mon, 29 Jun 2026 14:35:46 +0800 Received: from octopus.huawei.com (10.67.174.191) by kwepemq200017.china.huawei.com (7.202.195.228) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Mon, 29 Jun 2026 14:35:45 +0800 From: Cai Xinchen To: , , , , , , , , , , , , , CC: , , , , , , , Subject: [PATCH v3 stable/linux-6.12.y 0/3] Backport Fix incorrect overlayfs mmap() and mprotect() LSM access controls Date: Mon, 29 Jun 2026 15:03:35 +0800 Message-ID: <20260629070338.578858-1-caixinchen1@huawei.com> X-Mailer: git-send-email 2.18.0.huawei.25 Precedence: bulk X-Mailing-List: linux-security-module@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain X-ClientProxiedBy: kwepems500001.china.huawei.com (7.221.188.70) To kwepemq200017.china.huawei.com (7.202.195.228) v3: Backport 4e301d858af17a ("fs: constify file ptr in backing_file accessor helpers") to fix const-discard warnings v2: Add static to struct kmem_cache *lsm_backing_file_cache; and define lbs_backing_file as int for keeping the same type as 6.12. Backport the patch series "Fix incorrect overlayfs mmap() and mprotect() LSM access controls" [1] to 6.12 lts I test selinux-testsuite[2] overlay test, it pass 135 tests. [1] https://lore.kernel.org/all/20260403030848.731867-5-paul@paul-moore.com/ [2] https://github.com/SELinuxProject/selinux-testsuite Amir Goldstein (1): fs: constify file ptr in backing_file accessor helpers Paul Moore (2): lsm: add backing_file LSM hooks selinux: fix overlayfs mmap() and mprotect() access checks fs/backing-file.c | 22 ++- fs/file_table.c | 40 +++-- fs/fuse/passthrough.c | 2 +- fs/internal.h | 4 +- fs/overlayfs/dir.c | 2 +- fs/overlayfs/file.c | 3 +- include/linux/backing-file.h | 4 +- include/linux/fs.h | 19 ++- include/linux/lsm_audit.h | 2 +- include/linux/lsm_hook_defs.h | 5 + include/linux/lsm_hooks.h | 1 + include/linux/security.h | 22 +++ security/security.c | 109 ++++++++++++++ security/selinux/hooks.c | 242 ++++++++++++++++++++++-------- security/selinux/include/objsec.h | 11 ++ 15 files changed, 398 insertions(+), 90 deletions(-) -- 2.18.0.huawei.25