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=-12.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 E645EC433DB for ; Wed, 23 Dec 2020 18:39:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AC44C2229C for ; Wed, 23 Dec 2020 18:39:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727207AbgLWSjK (ORCPT ); Wed, 23 Dec 2020 13:39:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44948 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726923AbgLWSjK (ORCPT ); Wed, 23 Dec 2020 13:39:10 -0500 Received: from mail-pl1-x632.google.com (mail-pl1-x632.google.com [IPv6:2607:f8b0:4864:20::632]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 33A14C06179C for ; Wed, 23 Dec 2020 10:38:30 -0800 (PST) Received: by mail-pl1-x632.google.com with SMTP id r4so92183pls.11 for ; Wed, 23 Dec 2020 10:38:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=CMW5ViyQU/+rcIAs5RIk2eLGKzZv3mRO/aQHaVo6mfk=; b=JBP3GT/OHoL328Abv/ONPBJ4yooRBcLu9sayT/XlJLorOhYHcVw27t6KNR5RUi1vJo edjiM0HUHLif0WHiNlNPT4Tt8bD1kw9Wqplm3nabEzBYO/OFh7u6KILjD2LhLRubWqf0 5JehQIOVkmgeA5A9+gaCs5KC01VoWVqW4CGjZH3YkPTxanF/nTHmqAhkGHjtteZb+KXN Z5L/At2CAR+kTIVrAIWDJo2DkqYgTGYhIAvEyfvMXxo0kAdroq7m/4mU7l43b0/H9q3Z iwgMAwA9xJoTM4SJJNjrzZYip8x7Vx0jtM76j0jcBLM4qNnCK4ZF7rgY/7pBFMsyOH5U Aeqg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=CMW5ViyQU/+rcIAs5RIk2eLGKzZv3mRO/aQHaVo6mfk=; b=DQ3Sn/w4IW656OOOxxC8HxuLRWFrNfO3rlKLFBsC7U+mRTfn9GZLRwKhr30k3luLhW S8FxJU0xZaJvijxovAAkamnzB4xXyMCY3cCyz5j2qJWEjQSySbQyeNPvnsG1miydLNEw EFYHhanNhY0gfRG8D/jtqK1gB/ahXBHB5LnHf1eefMRcRK/WbcC9bQuTHpRK8RvxMlMv enF5VU/6ofcG5OCKlmyU/LEbzjvKbQhYyfG4uKb4XrPuU8BI4Vfh5G7oMzfKd6O9F8UA txwxk8h667XLg02L9Vox7gtBc4FyCtujNlh56Msavdsb51LQWH7S/AXxbkkSBIyjphTK nzXQ== X-Gm-Message-State: AOAM530Q194BRXtYb5o6rclSiaxsfMe1UtL4Hg91Lk7SUqndbZZx9klR usZt6Nu97d/mejkOmzpIpQ== X-Google-Smtp-Source: ABdhPJz++IthAEp6/qryF75rQ5HmiFuATcLs9er8y083JRtNGpLhXaoEW7qVbNFph32dBHBKudFlzQ== X-Received: by 2002:a17:90b:228b:: with SMTP id kx11mr936531pjb.122.1608748709677; Wed, 23 Dec 2020 10:38:29 -0800 (PST) Received: from PWN (59-125-13-244.HINET-IP.hinet.net. [59.125.13.244]) by smtp.gmail.com with ESMTPSA id 145sm23406916pfu.8.2020.12.23.10.38.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 23 Dec 2020 10:38:28 -0800 (PST) Date: Wed, 23 Dec 2020 13:38:24 -0500 From: Peilin Ye To: Greg KH Cc: marcel@holtmann.org, stable@vger.kernel.org Subject: Re: [PATCH 4.14 4.9 4.4-stable] Bluetooth: Fix slab-out-of-bounds read in hci_le_direct_adv_report_evt() Message-ID: <20201223183824.GA17390@PWN> References: <20201223180446.17207-1-yepeilin.cs@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Wed, Dec 23, 2020 at 07:17:47PM +0100, Greg KH wrote: > On Wed, Dec 23, 2020 at 01:04:46PM -0500, Peilin Ye wrote: > > commit f7e0e8b2f1b0a09b527885babda3e912ba820798 upstream. > > > > `num_reports` is not being properly checked. A malformed event packet with > > a large `num_reports` number makes hci_le_direct_adv_report_evt() read out > > of bounds. Fix it. > > > > Backporting notes: > > - Rebased on linux-4.14.y, commit 3f2ecb86cb90 ("Linux 4.14.212") > > - Retested by syzbot > > > > Cc: stable@vger.kernel.org > > Fixes: 2f010b55884e ("Bluetooth: Add support for handling LE Direct Advertising Report events") > > Reported-and-tested-by: syzbot+24ebd650e20bd263ca01@syzkaller.appspotmail.com > > Link: https://syzkaller.appspot.com/bug?extid=24ebd650e20bd263ca01 > > Signed-off-by: Peilin Ye > > Signed-off-by: Marcel Holtmann > > --- > > net/bluetooth/hci_event.c | 12 +++++------- > > 1 file changed, 5 insertions(+), 7 deletions(-) > > Thanks for the backport, now queued up! No problem! It's 24th in China - Merry Christmas! Peilin