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 4E63533A004 for ; Mon, 15 Sep 2025 14:54:25 +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=1757948065; cv=none; b=UdcCvEO2zD0qsqYwEvkGH6UeS15c6BcGWOhDE1VY7EJtUnULgsMPuW9un5yuWOKjGJLQkK1K64T+TYipLwCW13HZ5VebDDBhbtMvpNCS2o8bLCUrkZ7Qm8/qYs5O1QG0fsFUW76bfvCTk5XUXo1FdMjzv+PycUcFO9aBCHMU0wU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757948065; c=relaxed/simple; bh=Ui/U/S9AymGrkSRFcnVlplj58Hk2kt/s3Rp0JocslVc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=qW0Coadnr6gWQLIs7+BwvrcCtlXCUi6Bst3HGokvMtRiCPkWiJEVYrjN592fuDanif16vPGi9xBmlC/XHuRbYxlvah3wjCP15aItcfvoq7Uq5+hB7qYAe2ZX+goYqgE/6dLOJIyHDWun9H9jfwvKlG58YlxHZVjfX3AZ5G8B27E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=U6P5ZjA5; 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="U6P5ZjA5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F2C90C4CEF1; Mon, 15 Sep 2025 14:54:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1757948064; bh=Ui/U/S9AymGrkSRFcnVlplj58Hk2kt/s3Rp0JocslVc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=U6P5ZjA5IRFxL9rHxEcZdzrLazt+fgB5i4BTehiadsRy+64rYowbeTTdTsbZYjVDq lmOOh6lymGTuV9Xs9TPC9cf84aOtbZg5fEv1bofKW2NS80WDEbu/67Al+o1DljTBDd MHs1o9b9mljCFcmhqX6LKix6XfCFzewQkMCjlLk8= Date: Mon, 15 Sep 2025 16:52:35 +0200 From: Greg KH To: Juergen Gross Cc: cve@kernel.org, linux-kernel@vger.kernel.org Subject: Re: CVE-2023-53212: xenbus: check xen_domain in xenbus_probe_initcall Message-ID: <2025091522-banjo-waggle-ccfe@gregkh> References: <2025091511-CVE-2023-53212-fdd4@gregkh> <33fb4d70-c3e7-4158-9727-3ad29f974246@suse.com> 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: <33fb4d70-c3e7-4158-9727-3ad29f974246@suse.com> On Mon, Sep 15, 2025 at 04:38:05PM +0200, Juergen Gross wrote: > On 15.09.25 16:21, Greg Kroah-Hartman wrote: > > From: Greg Kroah-Hartman > > > > Description > > =========== > > > > In the Linux kernel, the following vulnerability has been resolved: > > > > xenbus: check xen_domain in xenbus_probe_initcall > > > > The same way we already do in xenbus_init. > > Fixes the following warning: > > > > [ 352.175563] Trying to free already-free IRQ 0 > > [ 352.177355] WARNING: CPU: 1 PID: 88 at kernel/irq/manage.c:1893 free_irq+0xbf/0x350 > > [...] > > [ 352.213951] Call Trace: > > [ 352.214390] > > [ 352.214717] ? __warn+0x81/0x170 > > [ 352.215436] ? free_irq+0xbf/0x350 > > [ 352.215906] ? report_bug+0x10b/0x200 > > [ 352.216408] ? prb_read_valid+0x17/0x20 > > [ 352.216926] ? handle_bug+0x44/0x80 > > [ 352.217409] ? exc_invalid_op+0x13/0x60 > > [ 352.217932] ? asm_exc_invalid_op+0x16/0x20 > > [ 352.218497] ? free_irq+0xbf/0x350 > > [ 352.218979] ? __pfx_xenbus_probe_thread+0x10/0x10 > > [ 352.219600] xenbus_probe+0x7a/0x80 > > [ 352.221030] xenbus_probe_thread+0x76/0xc0 > > > > The Linux kernel CVE team has assigned CVE-2023-53212 to this issue. > > I don't see how an unprivileged user could trigger this problem. > > Please revoke this CVE. Now rejected, thanks for the review! greg k-h