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=-16.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 2CFAAC43464 for ; Fri, 18 Sep 2020 03:13:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D46B420678 for ; Fri, 18 Sep 2020 03:13:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600398817; bh=CaRo9/AHPZPm51FSWlzZAZXiIvY/hOJpN6jhNEj6A9g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=KAq8cPe23M7R+7dwz6J6kLg13G5SvL8DBsJuCYExbHx0mZ8M4PnW1qfP1Pquzm8me gj2OsvRC+FLHcngk5TonUoRUfDTxEcTU8O21isT/zjb2sWszj1dv0TFblQXBvXT25o J1c+StbQtlDIXAJDm55hmNpaORG7cOLruOaEUlXg= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726556AbgIRCBy (ORCPT ); Thu, 17 Sep 2020 22:01:54 -0400 Received: from mail.kernel.org ([198.145.29.99]:45976 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726434AbgIRCBd (ORCPT ); Thu, 17 Sep 2020 22:01:33 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 81F3B23444; Fri, 18 Sep 2020 02:01:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600394493; bh=CaRo9/AHPZPm51FSWlzZAZXiIvY/hOJpN6jhNEj6A9g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Q8+YkbS0yk2DcZRBEXwBpBZiZRlmrG7DmXj96ym7K2Hrd+RcRrtcqm+tDWIHqjwLZ zvwlBIUK+MhJj11385T6nzVk3n20uOK3NWTqZcX0UkfbHBJPFNq2H0FL0S6NMwiSN5 Zo9UP41h7YWuZViSvqUNyBjWHE0Geg4sAQhBKcWg= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Kangjie Lu , Daniel Vetter , Sasha Levin , dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.4 018/330] gma/gma500: fix a memory disclosure bug due to uninitialized bytes Date: Thu, 17 Sep 2020 21:55:58 -0400 Message-Id: <20200918020110.2063155-18-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200918020110.2063155-1-sashal@kernel.org> References: <20200918020110.2063155-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kangjie Lu [ Upstream commit 57a25a5f754ce27da2cfa6f413cfd366f878db76 ] `best_clock` is an object that may be sent out. Object `clock` contains uninitialized bytes that are copied to `best_clock`, which leads to memory disclosure and information leak. Signed-off-by: Kangjie Lu Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20191018042953.31099-1-kjlu@umn.edu Signed-off-by: Sasha Levin --- drivers/gpu/drm/gma500/cdv_intel_display.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/gma500/cdv_intel_display.c b/drivers/gpu/drm/gma500/cdv_intel_display.c index f56852a503e8d..8b784947ed3b9 100644 --- a/drivers/gpu/drm/gma500/cdv_intel_display.c +++ b/drivers/gpu/drm/gma500/cdv_intel_display.c @@ -405,6 +405,8 @@ static bool cdv_intel_find_dp_pll(const struct gma_limit_t *limit, struct gma_crtc *gma_crtc = to_gma_crtc(crtc); struct gma_clock_t clock; + memset(&clock, 0, sizeof(clock)); + switch (refclk) { case 27000: if (target < 200000) { -- 2.25.1 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=-12.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 A1735C43465 for ; Fri, 18 Sep 2020 02:01:35 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5D31522211 for ; Fri, 18 Sep 2020 02:01:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="Q8+YkbS0" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5D31522211 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C4E1F6E42E; Fri, 18 Sep 2020 02:01:34 +0000 (UTC) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6001C6E42E for ; Fri, 18 Sep 2020 02:01:33 +0000 (UTC) Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 81F3B23444; Fri, 18 Sep 2020 02:01:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1600394493; bh=CaRo9/AHPZPm51FSWlzZAZXiIvY/hOJpN6jhNEj6A9g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Q8+YkbS0yk2DcZRBEXwBpBZiZRlmrG7DmXj96ym7K2Hrd+RcRrtcqm+tDWIHqjwLZ zvwlBIUK+MhJj11385T6nzVk3n20uOK3NWTqZcX0UkfbHBJPFNq2H0FL0S6NMwiSN5 Zo9UP41h7YWuZViSvqUNyBjWHE0Geg4sAQhBKcWg= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 018/330] gma/gma500: fix a memory disclosure bug due to uninitialized bytes Date: Thu, 17 Sep 2020 21:55:58 -0400 Message-Id: <20200918020110.2063155-18-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200918020110.2063155-1-sashal@kernel.org> References: <20200918020110.2063155-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sasha Levin , Daniel Vetter , Kangjie Lu , dri-devel@lists.freedesktop.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Kangjie Lu [ Upstream commit 57a25a5f754ce27da2cfa6f413cfd366f878db76 ] `best_clock` is an object that may be sent out. Object `clock` contains uninitialized bytes that are copied to `best_clock`, which leads to memory disclosure and information leak. Signed-off-by: Kangjie Lu Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20191018042953.31099-1-kjlu@umn.edu Signed-off-by: Sasha Levin --- drivers/gpu/drm/gma500/cdv_intel_display.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/gma500/cdv_intel_display.c b/drivers/gpu/drm/gma500/cdv_intel_display.c index f56852a503e8d..8b784947ed3b9 100644 --- a/drivers/gpu/drm/gma500/cdv_intel_display.c +++ b/drivers/gpu/drm/gma500/cdv_intel_display.c @@ -405,6 +405,8 @@ static bool cdv_intel_find_dp_pll(const struct gma_limit_t *limit, struct gma_crtc *gma_crtc = to_gma_crtc(crtc); struct gma_clock_t clock; + memset(&clock, 0, sizeof(clock)); + switch (refclk) { case 27000: if (target < 200000) { -- 2.25.1 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel