From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DDF7CC43382 for ; Wed, 26 Sep 2018 20:35:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A28DA21533 for ; Wed, 26 Sep 2018 20:35:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A28DA21533 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727049AbeI0Ctd (ORCPT ); Wed, 26 Sep 2018 22:49:33 -0400 Received: from mga01.intel.com ([192.55.52.88]:12173 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726536AbeI0Ctd (ORCPT ); Wed, 26 Sep 2018 22:49:33 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 26 Sep 2018 13:34:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,307,1534834800"; d="scan'208";a="93990977" Received: from cschaufl-mobl.amr.corp.intel.com ([10.251.154.97]) by orsmga001.jf.intel.com with ESMTP; 26 Sep 2018 13:34:47 -0700 From: Casey Schaufler To: kernel-hardening@lists.openwall.com, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, selinux@tycho.nsa.gov, casey.schaufler@intel.com, dave.hansen@intel.com, deneen.t.dock@intel.com, kristen@linux.intel.com, arjan@linux.intel.com Subject: [PATCH v5 0/5] LSM: Support ptrace sidechannel access checks Date: Wed, 26 Sep 2018 13:34:41 -0700 Message-Id: <20180926203446.2004-1-casey.schaufler@intel.com> X-Mailer: git-send-email 2.17.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org v5: Revamped to match Jiri Kosina Harden spectrev2 userspace-userspace protection v7 Fixed locking issues in the LSM code. Dropped the new LSM hook and use a ptrace hook instead. v4: select namespace checks if user namespaces are enabled and credential checks are request. v3: get_task_cred wasn't a good choice due to refcounts. Use lower level protection instead v2: SELinux access policy corrected. Use real_cred instead of cred. This patchset provide a mechanism by which a security module can advise the system about potential side-channel vulnerabilities. The existing security modules have been updated to avoid locking issues in the face of PTRACE_MODE_SCHED. A new security module is provided to make determinations regarding task attributes including namespaces. Signed-off-by: Casey Schaufler --- include/linux/lsm_hooks.h | 5 +++ kernel/ptrace.c | 2 - security/Kconfig | 1 + security/Makefile | 2 + security/apparmor/domain.c | 2 +- security/apparmor/include/ipc.h | 2 +- security/apparmor/ipc.c | 8 ++-- security/apparmor/lsm.c | 5 ++- security/commoncap.c | 2 + security/security.c | 1 + security/selinux/hooks.c | 2 + security/sidechannel/Kconfig | 13 ++++++ security/sidechannel/Makefile | 1 + security/sidechannel/sidechannel.c | 88 ++++++++++++++++++++++++++++++++++++++ security/smack/smack_lsm.c | 3 +- 15 files changed, 127 insertions(+), 10 deletions(-)