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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 DF10AC2B9F4 for ; Mon, 28 Jun 2021 15:23:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C05396138C for ; Mon, 28 Jun 2021 15:23:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235912AbhF1PZZ (ORCPT ); Mon, 28 Jun 2021 11:25:25 -0400 Received: from mail.kernel.org ([198.145.29.99]:37102 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236062AbhF1PCM (ORCPT ); Mon, 28 Jun 2021 11:02:12 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 724A661D6D; Mon, 28 Jun 2021 14:41:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1624891261; bh=d0rFUGv2OW/1L4HfxFYIgaqp8z7UuTp8MhH/e3F0Ww4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ETBrnPYgWP7Ysx8JewwNMG/2tZBmLPCMDhmR1AaCVBRmJtopP0SCOJplbtm2m+Ye6 JGganYgsnxcpY9J8eAanEcyS78vZlNVaGZyfqiX+cO3ZatMuouEUsxSQOf67AIvnDn 3Z8UDbONmjy2+HUCDYSZXGyVTkQ/9BT9QMjz0VQ9amTMThXYIABYyHDYGTwz1SAtBj FyuDX/VY1+n4N8JZyBb3aLjn1M7SM2gSEqVbD0zSEh3wOcUTfrlnbQb7nnBpt1p0UU 22QUhh2fVUJwfDTFEJec6/3XAI3VNnKOeXDj/pB6SRMoScIu16s1f8D+EXOCtoustF uA9vENqY5QFMA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Kees Cook , "David S . Miller" , Sasha Levin Subject: [PATCH 4.9 66/71] r8169: Avoid memcpy() over-reading of ETH_SS_STATS Date: Mon, 28 Jun 2021 10:39:58 -0400 Message-Id: <20210628144003.34260-67-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210628144003.34260-1-sashal@kernel.org> References: <20210628144003.34260-1-sashal@kernel.org> MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.9.274-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-4.9.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 4.9.274-rc1 X-KernelTest-Deadline: 2021-06-30T14:39+00:00 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kees Cook [ Upstream commit da5ac772cfe2a03058b0accfac03fad60c46c24d ] In preparation for FORTIFY_SOURCE performing compile-time and run-time field bounds checking for memcpy(), memmove(), and memset(), avoid intentionally reading across neighboring array fields. The memcpy() is copying the entire structure, not just the first array. Adjust the source argument so the compiler can do appropriate bounds checking. Signed-off-by: Kees Cook Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/ethernet/realtek/r8169.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c index 3521e3a77556..f321b115719a 100644 --- a/drivers/net/ethernet/realtek/r8169.c +++ b/drivers/net/ethernet/realtek/r8169.c @@ -2338,7 +2338,7 @@ static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data) { switch(stringset) { case ETH_SS_STATS: - memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings)); + memcpy(data, rtl8169_gstrings, sizeof(rtl8169_gstrings)); break; } } -- 2.30.2