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=-4.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 5C31CC433DF for ; Tue, 4 Aug 2020 15:03:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3F269207FC for ; Tue, 4 Aug 2020 15:03:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=yandex.ru header.i=@yandex.ru header.b="Bf8tFFD/" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729548AbgHDPDL (ORCPT ); Tue, 4 Aug 2020 11:03:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34200 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729549AbgHDPCB (ORCPT ); Tue, 4 Aug 2020 11:02:01 -0400 Received: from forward100j.mail.yandex.net (forward100j.mail.yandex.net [IPv6:2a02:6b8:0:801:2::100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E6D65C06174A; Tue, 4 Aug 2020 08:02:00 -0700 (PDT) Received: from forward103q.mail.yandex.net (forward103q.mail.yandex.net [IPv6:2a02:6b8:c0e:50:0:640:b21c:d009]) by forward100j.mail.yandex.net (Yandex) with ESMTP id 4B55E50E031B; Tue, 4 Aug 2020 18:01:45 +0300 (MSK) Received: from mxback10q.mail.yandex.net (mxback10q.mail.yandex.net [IPv6:2a02:6b8:c0e:1b4:0:640:b6ef:cb3]) by forward103q.mail.yandex.net (Yandex) with ESMTP id 488A461E0011; Tue, 4 Aug 2020 18:01:45 +0300 (MSK) Received: from localhost (localhost [::1]) by mxback10q.mail.yandex.net (mxback/Yandex) with ESMTP id jNSF9J3USj-1iAKrFnP; Tue, 04 Aug 2020 18:01:44 +0300 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex.ru; s=mail; t=1596553304; bh=SPkeXqwcTMvQACiNmVSSb8F9FpqteU2Kb+2386F8/50=; h=Date:Message-Id:Cc:Subject:To:From; b=Bf8tFFD/1SAPi2ycyp+x+y/rrwZkk7ySdvFv/5a01wWG/MphcjJhSgC83HfIj8Epz PGE5k3A7D1MbJOFycNyBN2hh+Ci1wyuEmFhBDpPjuklUfKK+Zn+8TuiM6OXNVBc71F pj+FrUPhp3yaQJ8FtivQuOh5GdjUXACDA+HWwKsg= Authentication-Results: mxback10q.mail.yandex.net; dkim=pass header.i=@yandex.ru Received: by vla5-8300199a0c8b.qloud-c.yandex.net with HTTP; Tue, 04 Aug 2020 18:01:44 +0300 From: Evgeny Novikov Envelope-From: eugenenovikov@yandex.ru To: Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org, linux-kernel , ldv-project-org Subject: media: ddbridge: potential buffer overflow in open MIME-Version: 1.0 X-Mailer: Yamail [ http://yandex.ru ] 5.0 Date: Tue, 04 Aug 2020 18:01:44 +0300 Message-Id: <4321596552833@mail.yandex.ru> Content-Transfer-Encoding: 7bit Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ddb_open() accesses iminor(inode) of the ddbs array that has 64 elements at most. There will be a buffer overflow if iminor(inode) is greater than 63. Found by Linux Driver Verification project (linuxtesting.org).