From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4FAF92F46 for ; Tue, 2 Jul 2024 19:17:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719947852; cv=none; b=g3Wmbz5x/SYMcwH4OYybQRi3UIQMQrInSAsNXs9wgWNYCV8+9KotZZppwp2tgLE+x9g5BRjTNHOkPa/ELXvMER6cAAJoGakWFknosXdcSvzmflE3Y/PUg5ewJkWVusTkP4PTdWBaMbT79/GH4XSVsYrphTU2ANUiRCNXO6iwUGU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1719947852; c=relaxed/simple; bh=lHG2Fl5Hk9swj1oNbituaONP5dUGxnsiHYPfF7AemCw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=MtW4pcD+7k7SfmT+3E+C1d/IkB8C2Li5NJOadneyAKYQFJaBA00PiQcjuoHcacHFDpmZ0lJaypQgnjWrySQikEeraVA2NeW1YZk6UjnOmitq6M8bBWBmlX0lKybW8cNfTPJxQy4YfAKv8vkfT4kUWwCm7Jwm4sfyvSkKOqJ8m78= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=AaNi1ra5; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="AaNi1ra5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0487CC116B1; Tue, 2 Jul 2024 19:17:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1719947852; bh=lHG2Fl5Hk9swj1oNbituaONP5dUGxnsiHYPfF7AemCw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=AaNi1ra5bzcBbhsNecJ2NgmK62Mr6psH1AD/Pk3gS0t3/2D9547XEJbsINkRS8jAq wUbSzXj5BTEvJZ7NoMUyWICyDf3CjlsyTVakY5B2mQMXdjgjTNkQBEE1r3IPnok5Sx GqTjEOWTzZ3hDkVlkGJb5ivewc68Or4OnnFBJMhI= Date: Tue, 2 Jul 2024 21:16:07 +0200 From: Greg Kroah-Hartman To: Jean Delvare Cc: cve@kernel.org, linux-kernel@vger.kernel.org, Hamish Martin , Mika Westerberg , Andi Shyti , Wolfram Sang Subject: Re: CVE-2024-39362: i2c: acpi: Unbind mux adapters before delete Message-ID: <2024070209-tapping-satchel-a949@gregkh> References: <2024062550-CVE-2024-39362-2d27@gregkh> <364518a3a279657815b631e85f3177880b42f4f7.camel@suse.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <364518a3a279657815b631e85f3177880b42f4f7.camel@suse.de> On Tue, Jul 02, 2024 at 07:05:19PM +0200, Jean Delvare wrote: > Hi all, > > On Tue, 2024-06-25 at 16:22 +0200, Greg Kroah-Hartman wrote: > > In the Linux kernel, the following vulnerability has been resolved: > > > > i2c: acpi: Unbind mux adapters before delete > > (...) > > > > The Linux kernel CVE team has assigned CVE-2024-39362 to this issue. > > I would like to dispute this CVE. I don't quite understand how this bug > qualifies as a security bug, considering that only root can load and > unload overlay SSDT tables. The bug can't be triggered on purpose by a > remote or local unprivileged user. > > The bug causes a warning to be dumped to the kernel log, due to trying > to unbind a companion device which is already unbound, but as far as I > can see, that's all. acpi_unbind_one() is a best-effort function, it > returns 0 no matter what. kernfs_remove_by_ame_ns() will gracefully > return an error code. I can't see any obvious use-after-free happening > so I see no way an attacker could exploit this bug. > > So I would cancel this CVE. Now rejected, thanks for the information. thanks, greg k-h