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 0AFBB21A19; Thu, 30 May 2024 05:18:57 +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=1717046338; cv=none; b=hmS2dMkFbK4nd6qjyxseaqe86CPJOHu2PCB1ToSa6NwACova+KvYdctPzG1Fd7ycFle03EvcGRs+mDZtIo0x+MxmVwwztSutuvQUFrJUaxYHI4ucEHIBmmtUW0q4SD8xJ1DTLFP85Aj9OL41TK40ncBt9Xl31T+TfzmYpRWcDZ0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717046338; c=relaxed/simple; bh=pB/96JTuRoro7LJvuDUAX1gz1MMHuzk0wvh4zz3qcYY=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=ayaDVTCvxTyqIgZOb7LGZB3PSHdPz4oSBwKpeJnlaevLb0lJuA4VK0fsKDqYAZSX5bsGPoj5V56/vl3hJK91zJFBQQutLTRlo7ON6bzm8BrJ+egwrI5HKEfcxejMjQTBWF/pHyA0REp3hLuJTxOLN/8gRfWvfVsEjSOOT8Ltvu8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=miPpxzI4; 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="miPpxzI4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1AC56C2BBFC; Thu, 30 May 2024 05:18:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1717046337; bh=pB/96JTuRoro7LJvuDUAX1gz1MMHuzk0wvh4zz3qcYY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=miPpxzI4OTYb1l3r1n90qJsxQVL+atcvaro2og/zgPEzy4uEfNng1Rwqx3ZfRf/ny LwtTWMX99mHCz/L85on2LtNJPS6fAj2E7HkXgDiOudZN/RoG5DhIleC4+hw03ofWYA q0GoJksCAdGY4VdJziGDG0geh3X/WTcBecxxQUzQ= Date: Thu, 30 May 2024 07:19:02 +0200 From: "gregkh@linuxfoundation.org" To: Kuzey Arda Bulut Cc: security@kernel.org, jirislaby@kernel.org, linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org Subject: Re: Subject: [SECURITY] Vulnerability in Linux Kernel Message-ID: <2024053036-villain-backlight-d92b@gregkh> References: Precedence: bulk X-Mailing-List: linux-serial@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: On Wed, May 29, 2024 at 08:25:18PM +0300, Kuzey Arda Bulut wrote: > Dear Linux Kernel Security Team, > > I have discovered a null-ptr-deref security vulnerability in tty driver in > the Linux kernel. You can find the detailed descriptions of the > vulnerability in report.md. > > If you have any questions or need further information, please do not > hesitate to contact me. As the n_gsm is full of known issues by the developers, and the ldisc is not allowed to be loaded by a non-root user, this isn't all that serious of an issue. See this thread for a list of problems that I think you might have already found here: https://lore.kernel.org/r/DB9PR10MB5881D2170678C169FB42A423E0082@DB9PR10MB5881.EURPRD10.PROD.OUTLOOK.COM Note, 2 fixes have landed in 6.10-rc2 for this driver, can you verify if these fix the issue you are reporting here? And do you have a proposed fix for this issue? thanks, greg k-h