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 E635F39852; Tue, 28 May 2024 19:02:57 +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=1716922978; cv=none; b=HRWXncasruRheTMJ9GCC46TF5+P2OyFIWtdSnf5hZL/Gd5z5DmbLY7heVyeNVWV3cmwDnc1MfNxWWWKjeRzCGFexZTdslwxUpFuPttMXbA8vT6jojtsAM9ZkCmeTK+dYHEheEUM2nHDMVycUVzwEbwWQnykngA3wjOonHqgMf9I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716922978; c=relaxed/simple; bh=GD3/dN6ZzfzJRaXladDHQA1hNTErMD4rTa0AbrBxOys=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=SzNKHbGkVNj9cFXr3ZNglL5G6ecr0gkwRAiyT83CWJS8U+AWgQOc2CWQ7drCgG8n85ICYcpNZmIxnjRAMCAwBmO9xzt+zAyLlx4V//vDsagGERwSuyFhcY4APvXOU6oAFgyvC4j/GF79FRVn0OQTE6hDKCO0pvgIlKDuq0fJAag= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=K19noRN/; 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="K19noRN/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 45F71C32786; Tue, 28 May 2024 19:02:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1716922977; bh=GD3/dN6ZzfzJRaXladDHQA1hNTErMD4rTa0AbrBxOys=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=K19noRN/T7YC+i1E7Fkaoig7m7TchlX7Ihp54S2kNAmAvFxD77KVCgZp7oBpY/nrE vH9MWNO2aQmpDABcsobPDhIHqyq3jmSTGwQ0RhfWTuQP1x93puLo6ULybvUuu4fFns +Um0sNgoRC2z1kA5bcjukNYj3/wU+18y3tkozg5Q= Date: Tue, 28 May 2024 21:03:01 +0200 From: Greg KH To: Juergen Gross Cc: cve@kernel.org, linux-cve-announce@vger.kernel.org, linux-kernel@vger.kernel.org, "xen-devel@lists.xenproject.org" , "Xen.org security team" Subject: Re: CVE-2021-47377: kernel: xen/balloon: use a kernel thread instead a workqueue Message-ID: <2024052826-overpass-manliness-7f2c@gregkh> References: <2024041747-CVE-2024-26908-4690@gregkh> <9fba239d-2e22-425b-b45f-86ecf016c2fd@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: <9fba239d-2e22-425b-b45f-86ecf016c2fd@suse.com> On Mon, May 27, 2024 at 12:58:16PM +0200, Juergen Gross wrote: > Hi, > > I'd like to dispute CVE-2021-47377: the issue fixed by upstream commit > 8480ed9c2bbd56fc86524998e5f2e3e22f5038f6 can in no way be triggered by > an unprivileged user or by a remote attack of the system, as it requires > initiation of memory ballooning of the running system. This can be done > only by either a host admin or by an admin of the guest which might > suffer the detection of the hanging workqueue. > > Please revoke this CVE. Ah, good catch, this came in as part of the GSD import, and I missed that this required that type of permissions. Now revoked, thanks for the review! greg k-h