From patchwork Thu May 20 09:21:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 445390 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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 49921C43600 for ; Thu, 20 May 2021 10:59:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2E7A4610CB for ; Thu, 20 May 2021 10:59:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235422AbhETLA3 (ORCPT ); Thu, 20 May 2021 07:00:29 -0400 Received: from mail.kernel.org ([198.145.29.99]:54442 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239011AbhETK5F (ORCPT ); Thu, 20 May 2021 06:57:05 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 8A4586187E; Thu, 20 May 2021 10:02:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1621504928; bh=KC/AFbhFCGjO9RondL/0M1Dl4jpY4uJbLuDfMRm6ybw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HBfNBxa7ecNu0OtIvHMZUqoSsza4r8AoGe/GD7bkMTx8f+JJzyrNYzwP2jytPDwVc REtW1LQUgm7whHI8mbPq5hAc3tRg5nFAOUhlJhhD+AablRAdScx6cfzM4IFuaVM2rI TmycFFd1hD2vt4H0+4hArjSWZdbAMIQhxGyVNahw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Colin Ian King , Sasha Levin Subject: [PATCH 4.9 111/240] staging: rtl8192u: Fix potential infinite loop Date: Thu, 20 May 2021 11:21:43 +0200 Message-Id: <20210520092112.408708609@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210520092108.587553970@linuxfoundation.org> References: <20210520092108.587553970@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Colin Ian King [ Upstream commit f9b9263a25dc3d2eaaa829e207434db6951ca7bc ] The for-loop iterates with a u8 loop counter i and compares this with the loop upper limit of riv->ieee80211->LinkDetectInfo.SlotNum that is a u16 type. There is a potential infinite loop if SlotNum is larger than the u8 loop counter. Fix this by making the loop counter the same type as SlotNum. Addresses-Coverity: ("Infinite loop") Fixes: 8fc8598e61f6 ("Staging: Added Realtek rtl8192u driver to staging") Signed-off-by: Colin Ian King Link: https://lore.kernel.org/r/20210407150308.496623-1-colin.king@canonical.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/staging/rtl8192u/r8192U_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c index fa4c47c7d216..53b77c8ae328 100644 --- a/drivers/staging/rtl8192u/r8192U_core.c +++ b/drivers/staging/rtl8192u/r8192U_core.c @@ -3420,7 +3420,7 @@ static void rtl819x_update_rxcounts(struct r8192_priv *priv, u32 *TotalRxBcnNum, u32 *TotalRxDataNum) { u16 SlotIndex; - u8 i; + u16 i; *TotalRxBcnNum = 0; *TotalRxDataNum = 0;