From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-il1-f180.google.com (mail-il1-f180.google.com [209.85.166.180]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 94E3E12EBD4 for ; Fri, 24 May 2024 16:57:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.180 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716569832; cv=none; b=g9DEN7Zxhpsfy8VIuXOd219QGVk/qOaiWBYUpeBDgooSKrpYcz2qIgW6VNS3oA1J5tj6ZoiGdKJJbyUsVak8ndQuXMdQxglzDGVzPgVFlDiWPPJoNQPrF3U2+nh8IFZ0cYS7r8U64rNHYxCXuCJ/l4Y4U5LCP/PBWSrMPz0xFAs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716569832; c=relaxed/simple; bh=l1qij3H88ywYXunqBc7zXwXBfDbaEoUXbfNvl2pvmO4=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=cVS/eePV9HP8m9W9YNb+iFxMjLu2jjc1lq1wcxksZ3dQDzumL+Pl3JfRNrHpeMoExJ0cL8IDA5nJ4HlkW67yEKNq/6fXJkWd3T6iw45u9+M+HNbVU/VAOxYd7RKj/MHNa6v5afJsF3JyBENZVNEPY+OulKiP4P5gxQEry7UIM08= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk; spf=pass smtp.mailfrom=kernel.dk; dkim=pass (2048-bit key) header.d=kernel-dk.20230601.gappssmtp.com header.i=@kernel-dk.20230601.gappssmtp.com header.b=LHDlbWT3; arc=none smtp.client-ip=209.85.166.180 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kernel.dk Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20230601.gappssmtp.com header.i=@kernel-dk.20230601.gappssmtp.com header.b="LHDlbWT3" Received: by mail-il1-f180.google.com with SMTP id e9e14a558f8ab-36d92f4e553so3824025ab.3 for ; Fri, 24 May 2024 09:57:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20230601.gappssmtp.com; s=20230601; t=1716569829; x=1717174629; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=Yb7g4vjrRVkO5Lz+Zwi9wOYOWL08Ot70nen2ebWd6tQ=; b=LHDlbWT3ldp+/vm4p8TKb6XhPYl/O5SBEJWvoVLMx4rNy7HtFKjjkLZtZH/LMxGv0v 3XPoYNwP59e75dz4lO0kL5GxOuCAPIDTAiNzgFzFdMK/Xna1uoCnUrvZ2Fv9oXflA0DC 6cE2I7pGT7gxckRJZhrZ3QzBRyLrXJWVa4iruwish1QZ+BL5ek+xUsPfJpu3/uM4f+4E pCP5Vl5LtTao8ENGnnOHktPZl8lI0jPM6dPB1omvjslcx4/PpUqmBDDwlPWjoVi8IcHW LFMnd5/y4F/GwVZ94HzbmtZaD2jUcvGbt7OLxx84gXqh3PABuJSGHBhR7eG414E2jEYw 6rPA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716569829; x=1717174629; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Yb7g4vjrRVkO5Lz+Zwi9wOYOWL08Ot70nen2ebWd6tQ=; b=hm3P+6DmF6/waf/z9kZ44ufitpcwTTDRYV1/y/RPJfREjBT7Oa8KyfekNomekDi4Ft Il37spDbul0GV5Gi3dDvIdXkHJqeQHhdcP5qvkC7jT5EMq7XSRxJJLsweDZ/1NAXL37q BxPT1EjMZawsqQTgkmazajSCj8nfC8IMcftGICZk00JGqeAzKBQ/vSbLL85nDvxXCPo9 xhaTM4JVI9HLvQmNn99AtyQjes9zcJnmMddS+cT13mCJFJLnBsdHcXROoPdj8YdHzXyc /SULYMhxk82vMir8H6vzzsmOQZUAz6TTmwYqZoGE3pFNODcBxpqwOUicBMMudlybVo4Y CoHA== X-Forwarded-Encrypted: i=1; AJvYcCUmC5Yc9V9eDEjZ42H8uZcLDtm4k0kpuM9qvegBBR4i0eV/6dbRKgz4RKHvEc7xZmjTaemK6Nayof9SHuQNX7EEeBtaRAGkTTGJhfF+ X-Gm-Message-State: AOJu0YwuYI7k5uaTZKLFbcNlJ42NqTsyGFWa9Ce6VgTr8P6sN4PSHUb9 gDGsFojW/uuK45Cy8upwQuGd4dzwpsw/EGlak1LoBE87riHpxrBLCqbV/p5oyU0= X-Google-Smtp-Source: AGHT+IE2SfIZ4OIRZz8qyRAJqq5Zl8JbWj2ZECK2bYvomifLTEOhrzU8APo5+4+pTERqf1qDAF3IKg== X-Received: by 2002:a05:6e02:1c29:b0:36d:cb9d:cc9e with SMTP id e9e14a558f8ab-3737b36577emr33766115ab.2.1716569829377; Fri, 24 May 2024 09:57:09 -0700 (PDT) Received: from [192.168.1.116] ([96.43.243.2]) by smtp.gmail.com with ESMTPSA id e9e14a558f8ab-3737c32ee65sm4258045ab.67.2024.05.24.09.57.08 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 24 May 2024 09:57:08 -0700 (PDT) Message-ID: Date: Fri, 24 May 2024 10:57:07 -0600 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: CVE-2023-52656: io_uring: drop any code related to SCM_RIGHTS To: Gabriel Krisman Bertazi , Greg Kroah-Hartman Cc: linux-cve-announce@vger.kernel.org, cve@kernel.org, linux-kernel@vger.kernel.org References: <2024051338-CVE-2023-52656-6545@gregkh> <871q5rqhuc.fsf@mailhost.krisman.be> Content-Language: en-US From: Jens Axboe In-Reply-To: <871q5rqhuc.fsf@mailhost.krisman.be> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 5/24/24 10:45 AM, Gabriel Krisman Bertazi wrote: > Greg Kroah-Hartman writes: > >> Description >> =========== >> >> In the Linux kernel, the following vulnerability has been resolved: >> >> io_uring: drop any code related to SCM_RIGHTS >> >> This is dead code after we dropped support for passing io_uring fds >> over SCM_RIGHTS, get rid of it. >> >> The Linux kernel CVE team has assigned CVE-2023-52656 to this issue. > > Hello Greg, > > [+Jens in Cc] > > This is stable material, but doesn't deserve CVE status. There is > nothing exploitable that is fixed here. Instead, this commit is dropping > unreachable code after the removal of a feature, following another CVE > report. Doing the clean up in the original patch would have made the > real security fix harder to review. > > The real issue was reported as CVE-2023-52654 and handled by a different > commit. FWIW, the same is true for a number of other commits recently. They are nowhere near CVE material, it's just generic bug fixes. -- Jens Axboe