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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 63690C77B78 for ; Thu, 4 May 2023 19:47:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231225AbjEDTrk (ORCPT ); Thu, 4 May 2023 15:47:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49738 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230511AbjEDTqt (ORCPT ); Thu, 4 May 2023 15:46:49 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E05FDA247; Thu, 4 May 2023 12:44:52 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 72DC663773; Thu, 4 May 2023 19:44:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CE25AC433A0; Thu, 4 May 2023 19:44:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1683229490; bh=ZDpaaRyf/2z6KTrKXSfxuTRt3NtW4e5+JRI1L/NAYzE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jWFGGikspgjoImdVqlSCqtpniY4u6heow8btR1egWBXHQCnxEF9h96SI4r7vwJGm7 XrHpQjkGZWO10ybO55CRSkLm8aPTtZDV0xS4PLIl9gXRiw2yOeHo3KPqfoW+ZH5icz jn1i4BaldQOLO8XZrRnLbUB7wexCtUIc1qc3FDnnD5F8P2NF4RzeAJBUlSjwtwD6dh ktwfx4PtndJDHCjhaqFJwH9wp6xcDgYH6zi1JGx/usILhcxCY7crJ0mvHIutGL3bsH bDIQU1BCovD5G9idmCWyas1oiNkOUf/I4dxV6zfUPenuz+IY+F5lJUOW1Y4pE8HoeP KhWGa3n/BZ9Iw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Maxim Korotkov , Pavan Chebbi , Jakub Kicinski , Sasha Levin , michael.chan@broadcom.com, davem@davemloft.net, edumazet@google.com, pabeni@redhat.com, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 6.2 12/53] bnxt: avoid overflow in bnxt_get_nvram_directory() Date: Thu, 4 May 2023 15:43:32 -0400 Message-Id: <20230504194413.3806354-12-sashal@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230504194413.3806354-1-sashal@kernel.org> References: <20230504194413.3806354-1-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: Maxim Korotkov [ Upstream commit 7c6dddc239abe660598c49ec95ea0ed6399a4b2a ] The value of an arithmetic expression is subject of possible overflow due to a failure to cast operands to a larger data type before performing arithmetic. Used macro for multiplication instead operator for avoiding overflow. Found by Security Code and Linux Verification Center (linuxtesting.org) with SVACE. Signed-off-by: Maxim Korotkov Reviewed-by: Pavan Chebbi Link: https://lore.kernel.org/r/20230309174347.3515-1-korotkov.maxim.s@gmail.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c index 6bd18eb5137f4..2dd8ee4a6f75b 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c @@ -2864,7 +2864,7 @@ static int bnxt_get_nvram_directory(struct net_device *dev, u32 len, u8 *data) if (rc) return rc; - buflen = dir_entries * entry_length; + buflen = mul_u32_u32(dir_entries, entry_length); buf = hwrm_req_dma_slice(bp, req, buflen, &dma_handle); if (!buf) { hwrm_req_drop(bp, req); -- 2.39.2