From patchwork Thu Aug 4 12:41:22 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zheyu Ma X-Patchwork-Id: 12936330 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 D3A5EC19F2A for ; Thu, 4 Aug 2022 12:41:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232339AbiHDMlr (ORCPT ); Thu, 4 Aug 2022 08:41:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58464 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239082AbiHDMlm (ORCPT ); Thu, 4 Aug 2022 08:41:42 -0400 Received: from mail-pf1-x42b.google.com (mail-pf1-x42b.google.com [IPv6:2607:f8b0:4864:20::42b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1EABC2AE3C; Thu, 4 Aug 2022 05:41:41 -0700 (PDT) Received: by mail-pf1-x42b.google.com with SMTP id f28so11000441pfk.1; Thu, 04 Aug 2022 05:41:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc; bh=Jxp/ZZ2IP/r5wdh/E9VL2sjWN7cCRv4O2EVI3aFNd88=; b=mB1b1iZj1jk6+iE3H8+0/DIUxhsUtKMmi1cUlKktRqiKRdQl6wcVCaH0fxiKE5L1St Oo0ssMdoZK+r/XpROJQAL4ajPnwpPXVyS3osq1JaxsveNY7yOUdGfwwVcgyxRjB/7+rD TatDIZp8jwH4Q892sSBKqahFwQjQh0tcbDYNmkFOpnl+GyaYDpreX6AY0LN/kjjWFVOp KjALY8HLg1vivHOSjiIKxVIuoT/K5JZwwypcojJ/gbMP0ILl+YPZy1lNDvz2V6+ybajI 5yjS77Vurc+ZDrE4mltLD27p3SSiNZrMPLy3NaQgwQ2c6Z6lz5tAfKQFxCDcvZoz+4o7 K7XA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc; bh=Jxp/ZZ2IP/r5wdh/E9VL2sjWN7cCRv4O2EVI3aFNd88=; b=h9zk69+U3nMJjofMCydSWGm8Rz295uBFKGmF7/Xzg68xyzzZ8PazD9dSuX90LlDcB4 cuGlEHd9MgOsFOd95b+oUgnzOV6RUkq/6zX5RGeDi6yVxTn9hSmow+JrmYahFmVl+RLB iojKZLiDNSMk64m+ZDakltjeD8TYl7nzTFRNEC1uMIdmqZosY3jwT8OGoDYLlHllcT1Y ewTWyZqBr106JWZepoPp2iC8VRxzFB8NyEpjXfoF9wQJXJqrt4qzPhqxyjwUJWXtToxi vKET+dn91jqfgHV8zxyCWo9iL7ES9E0H99tYOVqVvfIZ3G/HmTIPIZbOy4m/uikVYi7h jlKQ== X-Gm-Message-State: ACgBeo0eM7uUYGWwa4NCULvnMpRYCENGNMux2PPR1Wk7p2BlS4aN8YGO D2TPWvH/6Sa71ARNChIAe+6XEFEMJrpOWVA= X-Google-Smtp-Source: AA6agR7OCkCZOlQGd61Gl4vRVugbgIJJG5uCOjm6CCDU2oMYjrbQ4/YazeoSktpsodzeVz9eh6wGsg== X-Received: by 2002:a05:6a00:1c4b:b0:52e:6c05:8f1f with SMTP id s11-20020a056a001c4b00b0052e6c058f1fmr1746153pfw.7.1659616900533; Thu, 04 Aug 2022 05:41:40 -0700 (PDT) Received: from localhost.localdomain ([166.111.133.51]) by smtp.gmail.com with ESMTPSA id i8-20020a63bf48000000b0041b672e93c2sm1070769pgo.17.2022.08.04.05.41.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 Aug 2022 05:41:40 -0700 (PDT) From: Zheyu Ma To: deller@gmx.de, adaplas@gmail.com, santiago@crfreenet.org, akpm@linux-foundation.org Cc: linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Zheyu Ma Subject: [PATCH 0/3] Fix bugs in *_set_par() caused by user input Date: Thu, 4 Aug 2022 20:41:22 +0800 Message-Id: <20220804124125.3506755-1-zheyuma97@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org In the function *_set_par(), the value of 'screen_size' is calculated by the user input. If the user provides the improper value, the value of 'screen_size' may larger than 'info->screen_size', which may cause a bug in the memset_io(). Zheyu Ma (3): video: fbdev: vt8623fb: Check the size of screen before memset_io() video: fbdev: arkfb: Check the size of screen before memset_io() video: fbdev: s3fb: Check the size of screen before memset_io() drivers/video/fbdev/arkfb.c | 2 ++ drivers/video/fbdev/s3fb.c | 2 ++ drivers/video/fbdev/vt8623fb.c | 2 ++ 3 files changed, 6 insertions(+)