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 BEA45C43334 for ; Fri, 8 Jul 2022 06:54:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237268AbiGHGyF (ORCPT ); Fri, 8 Jul 2022 02:54:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42544 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236525AbiGHGyD (ORCPT ); Fri, 8 Jul 2022 02:54:03 -0400 Received: from mail-pj1-x1042.google.com (mail-pj1-x1042.google.com [IPv6:2607:f8b0:4864:20::1042]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B7F953336F for ; Thu, 7 Jul 2022 23:54:02 -0700 (PDT) Received: by mail-pj1-x1042.google.com with SMTP id t5-20020a17090a6a0500b001ef965b262eso976482pjj.5 for ; Thu, 07 Jul 2022 23:54:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=0p61jryZuWaf1iGD9+TAoIkONnO1xU2zlDvB4A/KVzs=; b=GLmvoPsbiHtgH2eGzPxYNLXxZX0qe5xIG4Sy0HP38kF1R2Szz+cWEZYv1i8PCqPCPr cJEl8ppu7J542D283nq0toeQeCT358Xa/Qy8y7+5LUfHx7YstzBHbj+a83Cm+z1bYLzH nSzxH0/MPOEfJJDox+A9pskztk8Esdqs0exLhxgyBlis9od3dI3s8270aXKlqwu/hWdH Bs+pR0T5/zPwkMmlt4VzVJDmrQn0zSvCthA82trIHb0xza6OFn/fCCPdYhx5DfClZhxX +yLWROGc5B64Ctxzevsdf3mruBDw4kut0yo4zz72+UApJY63FTgVnBpOhyiUOdfRlGw+ cMIg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=0p61jryZuWaf1iGD9+TAoIkONnO1xU2zlDvB4A/KVzs=; b=M7Tbj5vjehCV3q9ZavdZWxW1YFdtQceDqEp4TBPLuLo1WVouH7ajnL4PwP9pJtOsZH kvBxGNh0Peo6JkhiHLr3aV3HAyDd3DOjPeNV+VEHCk05ZTiCf+SvOMMHE5sqvvK0GsxN vUEy9K3M5sRK6zNfdT8B2BJrQc8Hfw42GycY1FvTy6lqnSYF03bb+ECB33FYhjX96sGN knazq/5JT7PS9/uSk943PjOwpV/tdoIQmlloOF4hKto4+tgPCiPi9Tgcvn1OZlYXqtDC JbLOhT7ChzS2AGyQltJ8V5n4rEdUAuvzGhMHEmqhU4CztfEuG3Ply07l0beZcYska54t x/Bg== X-Gm-Message-State: AJIora+K54wyDDvDLSHQonMbyoT97AWmZMm6wmp2a9UZL/0eT1Z2BffI 5xfbUjJDMGZhTYCHBhtzKuE= X-Google-Smtp-Source: AGRyM1vrwPHyFjhMroybc7pp8FAWHGkAkseJUTPhLVf+GmUICbMKlCZgjY9v+SEeF2Bwe/0f8u0MLw== X-Received: by 2002:a17:90b:4b11:b0:1ef:d1e4:b302 with SMTP id lx17-20020a17090b4b1100b001efd1e4b302mr8473989pjb.73.1657263242274; Thu, 07 Jul 2022 23:54:02 -0700 (PDT) Received: from localhost.localdomain ([129.227.148.126]) by smtp.gmail.com with ESMTPSA id c17-20020a170903235100b0016bdf53b303sm10913397plh.205.2022.07.07.23.53.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 Jul 2022 23:54:01 -0700 (PDT) From: Hangyu Hua To: srinivas.kandagatla@linaro.org Cc: linux-kernel@vger.kernel.org, Hangyu Hua Subject: [PATCH] nvmem: fix possible integer overflow in nintendo_otp_reg_read() Date: Fri, 8 Jul 2022 14:53:46 +0800 Message-Id: <20220708065346.30727-1-hbh25y@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org bytes of type size_t is passed to words of type int in nintendo_otp_reg_read. This can lead to integer overflow. Signed-off-by: Hangyu Hua --- drivers/nvmem/nintendo-otp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/nvmem/nintendo-otp.c b/drivers/nvmem/nintendo-otp.c index 33961b17f9f1..eb614c31a6b4 100644 --- a/drivers/nvmem/nintendo-otp.c +++ b/drivers/nvmem/nintendo-otp.c @@ -50,7 +50,7 @@ static int nintendo_otp_reg_read(void *context, { struct nintendo_otp_priv *priv = context; u32 *val = _val; - int words = bytes / WORD_SIZE; + size_t words = bytes / WORD_SIZE; u32 bank, addr; while (words--) { -- 2.25.1