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=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 C256AC43381 for ; Thu, 7 Mar 2019 00:00:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 90FF320663 for ; Thu, 7 Mar 2019 00:00:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="BXibPNAU" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726639AbfCGAAQ (ORCPT ); Wed, 6 Mar 2019 19:00:16 -0500 Received: from mail-qk1-f201.google.com ([209.85.222.201]:54148 "EHLO mail-qk1-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726612AbfCGAAN (ORCPT ); Wed, 6 Mar 2019 19:00:13 -0500 Received: by mail-qk1-f201.google.com with SMTP id z123so11621178qka.20 for ; Wed, 06 Mar 2019 16:00:13 -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=EeAsNLooacMCIyQQG8kjyYl9LfYTYq2OlHNVaSq+jF4=; b=BXibPNAU2kBLKi0tjOaBoATPK4GSG9rdLOziADGyltDJLflexEotgn/YIOIEl1Fm1H yMKiAZuRKAYyc2wi9Z9d4o35i6BvJDlVbS0M3iQvUIZits5qZwr7R60IUQGPdO6d5eWg oqY4UJoLQdmZJ2B0X2IxvA0M9/CXZx0HcS1UqVad8pRlnNi2MHHBlTg276gQPOoUjJVU jXR9xzzJ/1LnMTEgqx6l/1wlLediq2tk6EewVxCYv9Ajdlki6r3EAt3+eXpztFNwMs93 3/hzDEIcglR4a8m9b8Zr9hyDIA0YZdse4rBnWiIpPApIuSjtOjoQUODVtRMhiygVCjIw lwFw== 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=EeAsNLooacMCIyQQG8kjyYl9LfYTYq2OlHNVaSq+jF4=; b=tyM9wWz2KlzJn7dXfhCc5sKsB0uGuTgfIgG5qscTTAtHD4YndIRe+OBTzqGKHURChu QLI+1Uhx35UTwlwM6e1nHRMALNDKLaMI+vFp/ya71o0Gf9cXnrRavZl4wULW5zyyizMX jcdDl1k9Voe5UkU52KmFN2mb0XOlTM314zh/AmI5LpPH2p9BjLo2rOwy8AWeyBwZ6cbP sbvLLgpYCPv8ZJ0e6DWWDbDVuDnydsp1YCByRDULTzf+g3MkGJ9cSnwn/4M7hhg6Oey+ 3k4FDyW9ZJhh4S+5on8RuOccbhxzQ/bxPaMQqhkoed+7g34HcP+YKVnAg6i8Cq92WgeO frtw== X-Gm-Message-State: APjAAAVmuAuDXmQE2j8H8MlqLpPLT1c0CBNuUAGW04uqxCwdC0CfiBH4 7Kk2s/f2+LuN2pipN7el0rIludnQKGdTPQDhiCc8Fw== X-Google-Smtp-Source: APXvYqyyHqurNEQcATvX9vuJ/DA66of6NpknXBwulCWr+CZ2zas04bUFP1eObLNYb/FpEk+eXfimYgny1hYZiiVpm2mLag== X-Received: by 2002:a0c:b10f:: with SMTP id q15mr6331977qvc.0.1551916812836; Wed, 06 Mar 2019 16:00:12 -0800 (PST) Date: Wed, 6 Mar 2019 15:59:04 -0800 In-Reply-To: <20190306235913.6631-1-matthewgarrett@google.com> Message-Id: <20190306235913.6631-19-matthewgarrett@google.com> Mime-Version: 1.0 References: <20190306235913.6631-1-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 Signed-off-by: Matthew Garrett --- 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