From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from canpmsgout06.his.huawei.com (canpmsgout06.his.huawei.com [113.46.200.221]) (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 282633368B6; Mon, 22 Jun 2026 02:46:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=113.46.200.221 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782096376; cv=none; b=cdbWFcQn2JFwUFRVaIrSXOM9a2zM8mf2eLmyeTbfurHw5CQmkkeWW758BlruDiTYbIMD+616pgg9cR/9gxPxHecHDXyaMyGtHxXNtJIPrJy3Uv3h/JqMnkvmoaywwfoZooiPhOGIZFTlrb9zJujJAM+td8wSMMJxyHwfJWqAymI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782096376; c=relaxed/simple; bh=ecSCH8B2TGpj5VKmxrOF/uPKN53mAl8NkW+VRTZfJdY=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=oUU41xO+KTRneWf/mZYc8DV1dyYxlqr3oMw2o+4m46aFv0MuhrLkSbrR4C9W5x0um/9aCITRZ4r2cze2rQW8WEiYDGp8lemRUTYLLDBnlkKWUCKdTrAzhGbNf6nbucb1wbm69cLUpIL51OK8I9Uu63xlbW6/bTMz836d+l9j3fw= 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=Flrh86l/; arc=none smtp.client-ip=113.46.200.221 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="Flrh86l/" dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=kxQ+pTQUG7fALAdw3vNbYQmc4GHeIWh4uuQ5d0leHiQ=; b=Flrh86l/NkbreKHOa4aQG47T/2KOHo3ZQyxUSqTIywCEIy7ICtoZWY1exKep476whC54WtzLa ihPz4DoGeqOWj7RO4Ms155OOvk2n6dPdu2GU8S7aXk1JxxtW4qnFajb7NJXlarM+G8dla5O0IJM 9U31+xmlGeb0rwGsHfIpcnI= Received: from mail.maildlp.com (unknown [172.19.162.144]) by canpmsgout06.his.huawei.com (SkyGuard) with ESMTPS id 4gkC5P5sYfzRhQs; Mon, 22 Jun 2026 10:36:57 +0800 (CST) Received: from dggemv712-chm.china.huawei.com (unknown [10.1.198.32]) by mail.maildlp.com (Postfix) with ESMTPS id 69C5B40538; Mon, 22 Jun 2026 10:46:00 +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 10:46:00 +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 10:45:59 +0800 From: Cai Xinchen To: , , , , , , , , , , , CC: , , , , , , Subject: [stable/linux-6.18.y 0/2] Backport Fix incorrect overlayfs mmap() and mprotect() LSM access controls Date: Mon, 22 Jun 2026 11:14:14 +0800 Message-ID: <20260622031416.2663747-1-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 6.18 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 | 17 ++- fs/file_table.c | 27 +++- fs/fuse/passthrough.c | 2 +- fs/internal.h | 3 +- fs/overlayfs/dir.c | 2 +- fs/overlayfs/file.c | 2 +- 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, 383 insertions(+), 79 deletions(-) -- 2.18.0.huawei.25