From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from canpmsgout02.his.huawei.com (canpmsgout02.his.huawei.com [113.46.200.217]) (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 E62363128D4; Sat, 27 Jun 2026 04:00:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=113.46.200.217 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782532825; cv=none; b=S54/ydFEChL+8cZsOd55aaXYtAjK7+se497NggGqnKWqzIVBC+QGaVFFoMVKlO7GibNkjZYJs+xnpTcDrQLdB51v1lSW0G+CK5RkuUSyidvZwjLUDWfpBRMTiNoBrQfCiy4gnAs5KK7MJDkBJFfh85hk6R/rIUF2jQPNUJYGbtw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782532825; c=relaxed/simple; bh=5WioYOdkftj4Trcm7BEyYvsRddN1exgX2MN++Iva60I=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=rUre8he2atFwLDTOV2wbU9NXGQhuXwUdCoKbbo0RXEyyAk6pVYC2rb2JbrRZbq9oyTmNq1NMTI7u3yd+35Nw+VF4ZLgyMPH+Lk2VJY53L3Yr1BiEgiRqBRnWTl5oJ8nnEjDlg1kO4rx6NlJ9bPdAVD1aRq72rADAAZE4XYIVt1E= 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=n/1O8hT2; arc=none smtp.client-ip=113.46.200.217 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="n/1O8hT2" dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=b1uPAzThSzd6EJ5lYoL6dx42p8gcMb26cxd/40Y4GBs=; b=n/1O8hT23GEWtntMSXhkM8MWc7mHqZBzdblQoOJuyq1lkOSIoWIH/JVmnr0PbDAtpthbmBvIW VvJteLFcZL8AwsF2wSBAA6hY+UCwrG/1ke8rcmy0XGa7ZAa9aAdc4z4y4zjjTDnPAETVM30xIAq 8rH5fIr/ciWuIMVFIcHYLG4= Received: from mail.maildlp.com (unknown [172.19.162.197]) by canpmsgout02.his.huawei.com (SkyGuard) with ESMTPS id 4gnJWB2YrdzcZxv; Sat, 27 Jun 2026 11:51:34 +0800 (CST) Received: from dggemv706-chm.china.huawei.com (unknown [10.3.19.33]) by mail.maildlp.com (Postfix) with ESMTPS id 0118E40576; Sat, 27 Jun 2026 12:00:17 +0800 (CST) Received: from kwepemq200017.china.huawei.com (7.202.195.228) by dggemv706-chm.china.huawei.com (10.3.19.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Sat, 27 Jun 2026 12:00:16 +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; Sat, 27 Jun 2026 12:00:15 +0800 From: Cai Xinchen To: , , , , , , , , , , , , CC: , , , , , , , Subject: [PATCH v2 stable/linux-6.12.y 0/2] Backport Fix incorrect overlayfs mmap() and mprotect() LSM access controls Date: Sat, 27 Jun 2026 12:28:33 +0800 Message-ID: <20260627042835.1492435-1-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: kwepems200001.china.huawei.com (7.221.188.67) To kwepemq200017.china.huawei.com (7.202.195.228) 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 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