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 67BA7C7EE23 for ; Tue, 23 May 2023 13:26:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235983AbjEWN0m (ORCPT ); Tue, 23 May 2023 09:26:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53500 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230130AbjEWN0k (ORCPT ); Tue, 23 May 2023 09:26:40 -0400 Received: from mail-wm1-x331.google.com (mail-wm1-x331.google.com [IPv6:2a00:1450:4864:20::331]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 18CC8109 for ; Tue, 23 May 2023 06:26:34 -0700 (PDT) Received: by mail-wm1-x331.google.com with SMTP id 5b1f17b1804b1-3f601c57d8dso21238165e9.0 for ; Tue, 23 May 2023 06:26:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=resnulli-us.20221208.gappssmtp.com; s=20221208; t=1684848392; x=1687440392; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=wa8882brqQgfaqBSNJBl6uslG94ncgU4uoIf58nOBLw=; b=hdIPaBpjmBbqcN3z/LBvM13heonTzENrjLNOAmN61bjlkA4i2DYkpHXbtD2cq1teuY A7PxoQtJy5yrhpf3Q77PNeWeu8EER5SPmAbDb+SOKSxLIN+HJnjmhyh3MafFe9Y1Jqdj c6Mh8cGB1o9lzktYb454ARyJ+GBdGFUyeyvm8AsSfNagUEGymxFf/hDqVSWxEqCCR2E+ xP0AQZm52mA73lAFywKWwJTz/NHFcfpg3GLoysZw4z5dWc0LGQFwXoqj9sT2q2fSYRjP RIzrJTJlZX+byxxlCp+CBLXrz8pEDaD8lOAe/18VotOXjQAUBusvvqf4MiPcQFQqw1nO apkA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684848392; x=1687440392; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=wa8882brqQgfaqBSNJBl6uslG94ncgU4uoIf58nOBLw=; b=W1IkcB8elfp8p/YBbZZTZ/4Pbs08fKenRjTGB362mFOdgTscVE6pkyLdMIsWF29AUV Z65p0rCpJ7veiFBuulocG04QAmj3R6oMJhe3I36qy5rVsvmA/aYP2SedyDsm1H6KHaEw KU1bOrtdP8ULPQTHBRSs5BIz7cq4YPY3dunP9uPAogohKZlsLpl6fk9ZoAX2XTX1DIIj 0FE/EZ084k3EeLoawYEbD8iF+W8luiq/m+YqiGoZnYN5Z61hwoDBpDOP1T3tDumhzQq9 tm3A969d5ODZvyh34cMYdua3gVDUqgxeNzwbt7NDX4cKbYOP3fQTHAJJrCiE0CUn9enq hqJA== X-Gm-Message-State: AC+VfDzyn/8J/VojfHhLPW7dOvLCNE9cRJCwarjSc+Xy4gYjsesDETdT b80je0MKsr/rjQK3Ux/XSYZH6w== X-Google-Smtp-Source: ACHHUZ4e5cRbt4cxwX5emt+5fpWZHlvYcRSNhQa3SR8qnr5dS6GXOwY9LQ3zqH5O4WVGbRWW2wDCSw== X-Received: by 2002:a7b:c8d9:0:b0:3f4:1ce0:a606 with SMTP id f25-20020a7bc8d9000000b003f41ce0a606mr10206652wml.1.1684848392523; Tue, 23 May 2023 06:26:32 -0700 (PDT) Received: from localhost (host-213-179-129-39.customer.m-online.net. [213.179.129.39]) by smtp.gmail.com with ESMTPSA id m25-20020a7bcb99000000b003f195d540d9sm15044720wmi.14.2023.05.23.06.26.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 May 2023 06:26:31 -0700 (PDT) Date: Tue, 23 May 2023 15:26:30 +0200 From: Jiri Pirko To: Gavrilov Ilia Cc: "David S. Miller" , David Ahern , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Vlad Yasevich , "netdev@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "lvc-project@linuxtesting.org" Subject: Re: [PATCH net] ipv6: Fix out-of-bounds access in ipv6_find_tlv() Message-ID: References: <20230523082903.117626-1-Ilia.Gavrilov@infotecs.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230523082903.117626-1-Ilia.Gavrilov@infotecs.ru> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Tue, May 23, 2023 at 10:29:44AM CEST, Ilia.Gavrilov@infotecs.ru wrote: >optlen is fetched without checking whether there is more than one byte to parse. >It can lead to out-of-bounds access. > >Found by InfoTeCS on behalf of Linux Verification Center >(linuxtesting.org) with SVACE. > >Fixes: 3c73a0368e99 ("ipv6: Update ipv6 static library with newly needed functions") >Signed-off-by: Gavrilov Ilia Reviewed-by: Jiri Pirko