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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 94785C433FE for ; Fri, 28 Jan 2022 19:56:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243761AbiA1T4r (ORCPT ); Fri, 28 Jan 2022 14:56:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34034 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233651AbiA1T4q (ORCPT ); Fri, 28 Jan 2022 14:56:46 -0500 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2A83FC06173B for ; Fri, 28 Jan 2022 11:56:46 -0800 (PST) Received: by mail-pj1-x102b.google.com with SMTP id b1-20020a17090a990100b001b14bd47532so7366584pjp.0 for ; Fri, 28 Jan 2022 11:56:46 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=qxYjpbNorHAO8wOm0edQ0bPBW87I7+SrXzhJE8v6af0=; b=LL3zfti731/Lxt4RBbrhZ7p2VTt3hFBMsFdtRe6RumFBlSbEKl3mGCrVtoHSvNqXgV ryGnqNynksnFNojCkxn5LkzwfLfodly7gcXpy3ZTWw3UW8fokWcay2efUM8kmhFqmV2q CnMdtUE+0PfB6kmjkizGq/YUFJsIqyKUi0Hoo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=qxYjpbNorHAO8wOm0edQ0bPBW87I7+SrXzhJE8v6af0=; b=0DHoco583KPzrTFHummNxc760aQ/lT+G9yr3B88ADlFjMgltDnFnfu9is/7/1T2GrK mE47vD8Gx73P+G93Zw2CmPHUsf3DuwYbJ3cYMJadfRLpVMqF7Rr2RvzyqL3WQ53Zp5cz mRBdBFaArmSwwjEwIr3qxRVukPcx7h1iYqkudqcE2HpgNk+cHGmaU2ga+KVeYtmjU06E OB3HcVF4yo7Aa+FLIggnbJ/w67pQN+/q9NEsMnjiTmcDd19+tZq+PFlg3mYoyHe98UxQ y08I8+8NYyCbfjdSu+qlEZzhrcDHXkhd0OLcAbY2StkcPjovOo+e+8MarkGqdzYK0Wkf zgXQ== X-Gm-Message-State: AOAM530kihvW6A1PIhQpCvU9Beks3aj+LffPWg0Fcg0auoRi3sqLv4zc JK1BVt3C6DQ3DVgQll47eupM5Q== X-Google-Smtp-Source: ABdhPJyrKlS/ACVpHgzb9f2n2haAr1ci1E4efkYZ6PK1+VMn1nTvSHFejxmwc29N9VWycHXUvR28Xg== X-Received: by 2002:a17:90a:4811:: with SMTP id a17mr11474979pjh.159.1643399805700; Fri, 28 Jan 2022 11:56:45 -0800 (PST) Received: from www.outflux.net (smtp.outflux.net. [198.145.64.163]) by smtp.gmail.com with ESMTPSA id j15sm10626572pfj.102.2022.01.28.11.56.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 28 Jan 2022 11:56:45 -0800 (PST) Date: Fri, 28 Jan 2022 11:56:44 -0800 From: Kees Cook To: Akira Kawata Cc: akpm@linux-foundation.org, adobriyan@gmail.com, viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org, lukas.bulwahn@gmail.com, kernel test robot , Eric Biederman , linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 1/2] fs/binfmt_elf: Fix AT_PHDR for unusual ELF files Message-ID: <202201281146.C8BC042C6@keescook> References: <20211212232414.1402199-1-akirakawata1@gmail.com> <20211212232414.1402199-2-akirakawata1@gmail.com> <202201261955.F86F391@keescook> <20220127125643.cifk2ihnbnxo5wcl@gmail.com> <202201270816.5030A2A4B5@keescook> <20220128111034.jf3i4arhahfwwd6n@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220128111034.jf3i4arhahfwwd6n@gmail.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 28, 2022 at 08:10:34PM +0900, Akira Kawata wrote: > On Thu, Jan 27, 2022 at 08:23:51AM -0800, Kees Cook wrote: > > And now I'm thinking about the excellent ELF loading analysis at: > > https://nathanotterness.com/2021/10/tiny_elf_modernized.html > > > > ;) > > I think you have interested in https://shinh.skr.jp/obf/bingolf.html > also. Ah, nice! The 104b one great. :) -- Kees Cook