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=-16.6 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL autolearn=unavailable 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 A5FAFC43381 for ; Thu, 28 Feb 2019 23:12:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6F5E7218AE for ; Thu, 28 Feb 2019 23:12:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="HzIVR3i8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388035AbfB1XMz (ORCPT ); Thu, 28 Feb 2019 18:12:55 -0500 Received: from mail-vk1-f202.google.com ([209.85.221.202]:50541 "EHLO mail-vk1-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387939AbfB1XMw (ORCPT ); Thu, 28 Feb 2019 18:12:52 -0500 Received: by mail-vk1-f202.google.com with SMTP id v123so11228237vkv.17 for ; Thu, 28 Feb 2019 15:12:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=Z211FiTElcD3CjDX6rl7HqMiBwionirC+FEZdLCWzco=; b=HzIVR3i8V/+98alctTtA7gEK4hLlZxu2Z5vBER34X6K1Ynqobi7o0Nmru4vCoXuERU Z8/v+mXxw+eOl0qxEVdS1sLwPAyUrWXR2MBX377cOjr8lqmPnLWFcrALX5dmzvEszAsq OQUINSsez5jKlD5cszNoUeRFbEfmqxcAB3z/1tAa6v7i9iToKStcvl5LKpRbGlEgT3CC MPvV8kXEKrq7oz4JgbnJziyLBr6ltu4D3Q98NnU57HoxAl1rtpx4IflpsbcI33y483Hm 3QJVsFQ/tZtZAz9HB1JxcaQ5JzWBD2zf7eTMRfGycacEjGOg2WFPfjaeioTVPh58HuHX MNSA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=Z211FiTElcD3CjDX6rl7HqMiBwionirC+FEZdLCWzco=; b=fHkCLawWi0AGyoVkjCxpVqZwdFV6xeToATLc/EawRkUfXEUwKgoML6njjV7ccXMIg4 QWNmv7mY6tQZHbGU3QGN3wyCVg71LnIhsnq3KL1Cs+zwCp0qZfEZDsyIvD2fBH3gu0/J C2BEZz7q/sPnTtT7TxKpq6joJJOok1UytO69NUeWvyGT3eNYQAouyqKSx9R0eNTsn2Yz CrIiEkS2+VTBAbt6k2gO9ZSDURHDlVTY5e/It+G4jpx6AVtoOetA0NQuGXmaUYFVZD6O pXM+5knP9HyCrks77opQG2g+P370OeNuWINtJos6XjIs201XLPS3lW+EkQTb7523YpkP ybJg== X-Gm-Message-State: APjAAAXiRRDTspyZdhUfWbuNeURZXttIqBC8qcRVp7VrmqYJRE1oBMg1 AvMwvASJJ+rppx+N2x1kplMR7yOSrrGXCMAS7up+Tg== X-Google-Smtp-Source: APXvYqymJnMwoBdBo2NT2lteH4kP+TDr8bkEoN35nObwRtoOLjzs9jvV7ELP34iPO+nsEkvESt5zhCKSvCh4McMdH2Lxcg== X-Received: by 2002:a1f:94c6:: with SMTP id w189mr1463770vkd.6.1551395571429; Thu, 28 Feb 2019 15:12:51 -0800 (PST) Date: Thu, 28 Feb 2019 15:11:54 -0800 In-Reply-To: <20190228231203.212359-1-matthewgarrett@google.com> Message-Id: <20190228231203.212359-18-matthewgarrett@google.com> Mime-Version: 1.0 References: <20190228231203.212359-1-matthewgarrett@google.com> X-Mailer: git-send-email 2.21.0.352.gf09ad66450-goog Subject: [PATCH 18/27] Prohibit PCMCIA CIS storage when the kernel is locked down From: Matthew Garrett To: jmorris@namei.org Cc: linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, dhowells@redhat.com Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: David Howells Prohibit replacement of the PCMCIA Card Information Structure when the kernel is locked down. Suggested-by: Dominik Brodowski Signed-off-by: David Howells cc: linux-pcmcia@lists.infradead.org --- drivers/pcmcia/cistpl.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pcmcia/cistpl.c b/drivers/pcmcia/cistpl.c index ac0672b8dfca..8adf092d0e18 100644 --- a/drivers/pcmcia/cistpl.c +++ b/drivers/pcmcia/cistpl.c @@ -1578,6 +1578,9 @@ static ssize_t pccard_store_cis(struct file *filp, struct kobject *kobj, struct pcmcia_socket *s; int error; + if (kernel_is_locked_down("Direct PCMCIA CIS storage")) + return -EPERM; + s = to_socket(container_of(kobj, struct device, kobj)); if (off) -- 2.21.0.352.gf09ad66450-goog