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 780C21DDC07; Mon, 22 Jun 2026 02:46:52 +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=1782096414; cv=none; b=VyvJ+lYoqptwpojlNiFzcCRtHfR+odc+pocnM4WxiPwjCxcVu4W9fpGV1JpoqXialDfdM2gDbuJDjJD4TyWgz0nQ8PUEcu9xBwdW7BkvICKW4F1Srcd6Nl3Syo3mSuj760MNE64+K590SoMYX9FbTfLU4ob+fD1Xj6Bkmd3YF2o= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782096414; c=relaxed/simple; bh=ITwibAoohEhKkGfyw+Gk5D8qvlQLZnI7BnHFFLSMDTc=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=DcnoivLuhscB0fG+ZQK9OvP3zzC0sPnCJMaC6XgDNtLbm4Eq/IzTJOPMtdi3QwtG1zNBPHTqSeqqDuV4vcsSLESJfVAxqdUSK8zjAXoMBrps5Q7qcT/f8xR9gYdS/c2eBVbNA+YPZh8/sBdERrw4yb0nWdH+8/ayhju8dZpMmAg= 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=EjLL20sh; 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="EjLL20sh" dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=rqyRYauFoZD7OtL09SvrGfEJybuCnehmyvW/bWiPslY=; b=EjLL20shXrFj9sNsYfzAfLPNK4ZLnQcfu7zRMQNKtJIz6wGaDsGcmFaZDO+z/phb0OhmI1VyN nriYRgsZ+SoLZc8edGAV4Lv3PSgKgH+tnTXw0Js2zfXwf3VE8ly9QSyREbUVydV2wRXOBmOYjXD 35wUpWz79LoCIYSc3+GZnkk= Received: from mail.maildlp.com (unknown [172.19.163.15]) by canpmsgout09.his.huawei.com (SkyGuard) with ESMTPS id 4gkC6N1Qycz1cyrl; Mon, 22 Jun 2026 10:37:48 +0800 (CST) Received: from dggemv712-chm.china.huawei.com (unknown [10.1.198.32]) by mail.maildlp.com (Postfix) with ESMTPS id AF2BE40571; Mon, 22 Jun 2026 10:46:50 +0800 (CST) Received: from kwepemq200017.china.huawei.com (7.202.195.228) by dggemv712-chm.china.huawei.com (10.1.198.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Mon, 22 Jun 2026 10:46:50 +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, 22 Jun 2026 10:46:49 +0800 From: Cai Xinchen To: , , , , , , , , , , , CC: , , , , , , Subject: [stable/linux-6.12.y 0/2] Backport Fix incorrect overlayfs mmap() and mprotect() LSM access controls Date: Mon, 22 Jun 2026 11:15:07 +0800 Message-ID: <20260622031509.2663919-1-caixinchen1@huawei.com> X-Mailer: git-send-email 2.18.0.huawei.25 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain X-ClientProxiedBy: kwepems100001.china.huawei.com (7.221.188.238) To kwepemq200017.china.huawei.com (7.202.195.228) 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 Paul Moore (2): lsm: add backing_file LSM hooks selinux: fix overlayfs mmap() and mprotect() access checks fs/backing-file.c | 18 ++- fs/file_table.c | 27 +++- fs/fuse/passthrough.c | 2 +- fs/internal.h | 3 +- fs/overlayfs/dir.c | 2 +- fs/overlayfs/file.c | 3 +- include/linux/backing-file.h | 4 +- include/linux/fs.h | 13 ++ 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, 384 insertions(+), 80 deletions(-) -- 2.18.0.huawei.25