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=-8.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL autolearn=no 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 ECECCC433E2 for ; Mon, 18 May 2020 14:43:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BB5F620756 for ; Mon, 18 May 2020 14:43:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="NnbKbGQl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727942AbgEROnt (ORCPT ); Mon, 18 May 2020 10:43:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59886 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727020AbgEROnt (ORCPT ); Mon, 18 May 2020 10:43:49 -0400 Received: from mail-lj1-x243.google.com (mail-lj1-x243.google.com [IPv6:2a00:1450:4864:20::243]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7D5AEC05BD0B for ; Mon, 18 May 2020 07:43:48 -0700 (PDT) Received: by mail-lj1-x243.google.com with SMTP id m18so1747111ljo.5 for ; Mon, 18 May 2020 07:43:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=vmKMl5YPAbtYvThGAufK7+pRDXytMF6DEwy6+OdOT6c=; b=NnbKbGQluk5lNt1OMh91AzLf43ctbuCx11Qrf3/SH8c37zea2KCW1nBzzZxOP6eBMJ mNikiWnBzqw1Qh5gemWUCvWkJrCIW8yDSnkDx8R6ZYBzKq+OLJjZPeFz2G9mgUvlkVTM dm8UA+SmF8OQXRg6DdCXiTcqKrEVyEYP7SLPKT2yHm+RCB4cGu3cFPb2AjVfi0QY5rUq qAGDKXTutca8F5XEP0TqE545HEJbER9IgNbvIFzIa9jPi0OuqeYk/x+vJdTSoeTUygoI 8E5aJEpfXrwXeNyCuMqf4Iw1FJkWkKCQGV1kAlYV1sACiLyt3C6WFh/ySD2nZG5gBeFu wwUg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=vmKMl5YPAbtYvThGAufK7+pRDXytMF6DEwy6+OdOT6c=; b=RbblCl8/8KnRlYOOfp1ySjx2gG/jSRyZWeoXAfgj1VXc3j1MR4wr1kKBmqXpbpHOm7 NzQHFJXImU1d+ltI4yg9UmSrqQBtt3pUA4e3eZfgNmZ37CI4hQBhymkN+O9fCcYvDK8I bA5zj1TZQV9LwC/XJ2vcaDZ7wwBujyMim1p3LcVXjCY6MtmJMnVUmniM2S5OHwKzrf1v sA8REilRnV5cIFcwR1D8dq8fwQYNY8apbEW/OBWbk51p9VDuE2f6m6Jakb53V5j+8q5Y WzQNHi1nDWrJcMMPF+v4JqUI/Rt/rN8FYXVu+IvrlJUhGNbaklm+MKKzXuP9/FcM/Pqa qpvQ== X-Gm-Message-State: AOAM5314PkJ8ZE+Xr8nsnJ6wLmnyRRALZoQmNp/TvpkDe7CpRUMIZGmH Ysvs5rtQl1TwuFG7Ke6yc2I9yXtc3uOM9OUWTYLV/Q== X-Google-Smtp-Source: ABdhPJxtr0BKnKjn6pCHBXg0CBH0lcE95cP/SI2TsQx+b5KMUXKtBPY9ZvGp2Yty+kEdByTnUauiLd0kc/yHpxl0ygk= X-Received: by 2002:a2e:8e8c:: with SMTP id z12mr2985329ljk.221.1589813026603; Mon, 18 May 2020 07:43:46 -0700 (PDT) MIME-Version: 1.0 References: <20200518055457.12302-1-keescook@chromium.org> <20200518055457.12302-2-keescook@chromium.org> <20200518130251.zih2s32q2rxhxg6f@wittgenstein> In-Reply-To: <20200518130251.zih2s32q2rxhxg6f@wittgenstein> From: Jann Horn Date: Mon, 18 May 2020 16:43:20 +0200 Message-ID: Subject: Re: [PATCH 1/4] exec: Change uselib(2) IS_SREG() failure to EACCES To: Christian Brauner Cc: Kees Cook , Al Viro , Andrew Morton , Tetsuo Handa , Eric Biggers , Dmitry Vyukov , linux-fsdevel , linux-security-module , Linux API , kernel list Content-Type: text/plain; charset="UTF-8" Sender: owner-linux-security-module@vger.kernel.org Precedence: bulk List-ID: On Mon, May 18, 2020 at 3:03 PM Christian Brauner wrote: > Also - gulp (puts on flame proof suit) - may I suggest we check if there > are any distros out there that still set CONFIG_USELIB=y Debian seems to have it enabled on x86... https://salsa.debian.org/kernel-team/linux/-/blob/master/debian/config/kernelarch-x86/config#L1896 A random Ubuntu 19.10 VM I have here has it enabled, too.