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=-2.1 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 0F00AC18E5B for ; Mon, 16 Mar 2020 18:46:14 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id C553720674 for ; Mon, 16 Mar 2020 18:46:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="SSs2z12w" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C553720674 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id B4C7A6B0003; Mon, 16 Mar 2020 14:46:11 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id AD60C6B0005; Mon, 16 Mar 2020 14:46:11 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9C31F6B0007; Mon, 16 Mar 2020 14:46:11 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0198.hostedemail.com [216.40.44.198]) by kanga.kvack.org (Postfix) with ESMTP id 7D27B6B0003 for ; Mon, 16 Mar 2020 14:46:11 -0400 (EDT) Received: from smtpin08.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 2337B824556B for ; Mon, 16 Mar 2020 18:46:11 +0000 (UTC) X-FDA: 76602105342.08.flesh15_35f5fd5e5b014 X-HE-Tag: flesh15_35f5fd5e5b014 X-Filterd-Recvd-Size: 2162 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by imf18.hostedemail.com (Postfix) with ESMTP for ; Mon, 16 Mar 2020 18:46:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: Content-Type:In-Reply-To:MIME-Version:Date:Message-ID:From:References:To: Subject:Sender:Reply-To:Cc:Content-ID:Content-Description; bh=lykDkKuyOM3l9z/KLSOUCUyrIWWCYuYYMI2I8XCSJ9s=; b=SSs2z12wUEMFqXAMM2YxYy4BzE lSaWyhyjRS69av7RlhiAO8/wOS87ZAe8hPsnRnUqTP5wG3nsPwbgSZorUk2B3/gApFfgUrOD94oly jr7AYJmc558NJYJZnSwM0PIGzlm2QKeVNSt9i6VJx3iC2Q464Kt3gWDh+53PHZJYoajLiZz/+ymDn uzj/D6E8qDCn7tpsSg2kz+ege7V6fG0bKDTLy9uYvdjnmMvp/L9TnEuTvgJ6V/hpln9vgzi7SLC04 7+aCa+B4rnluMg260EaS52vn+OgIGn9cmHs16aj6DEvY8f1/mTEHcPn2ugwj3W7keX2NTdAT8G7z4 0Do0RNcg==; Received: from [2601:1c0:6280:3f0::19c2] by bombadil.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1jDuka-0004Sn-S7; Mon, 16 Mar 2020 18:46:08 +0000 Subject: Re: KASAN: stack-out-of-bounds Write in mpol_to_str To: Entropy Moe <3ntr0py1337@gmail.com>, linux-kernel@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org References: From: Randy Dunlap Message-ID: <9e699198-d1e4-f285-f4ed-15fbf8a8c16e@infradead.org> Date: Mon, 16 Mar 2020 11:46:08 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.048160, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 3/15/20 12:57 PM, Entropy Moe wrote: > Hello team, > how are you ? > I wanted to report a bug on mempolicy.c. I found the bug on the latest = version of the kernel. >=20 > which is stack out of bound vulnerability. >=20 > I am attaching=C2=A0 report.=C2=A0 >=20 > If you need the POC crash code, I can provide. Hi Moe, Please post the POC code and your kernel .config file. thanks. --=20 ~Randy