From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from smtp.codeaurora.org ([198.145.29.96]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i4KsG-0006Gr-Jt for ath10k@lists.infradead.org; Sun, 01 Sep 2019 08:06:14 +0000 From: Kalle Valo Subject: Re: [PATCH 2/2] Fix a NULL-ptr-deref bug in ath10k_usb_alloc_urb_from_pipe References: <20190804003101.11541-1-benquike@gmail.com> <20190831213139.GA32507@roeck-us.net> Date: Sun, 01 Sep 2019 11:06:05 +0300 In-Reply-To: <20190831213139.GA32507@roeck-us.net> (Guenter Roeck's message of "Sat, 31 Aug 2019 14:31:39 -0700") Message-ID: <87ftlgqw42.fsf@kamboji.qca.qualcomm.com> MIME-Version: 1.0 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "ath10k" Errors-To: ath10k-bounces+kvalo=adurom.com@lists.infradead.org To: Guenter Roeck Cc: Mathias Payer , netdev@vger.kernel.org, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, ath10k@lists.infradead.org, Hui Peng , davem@davemloft.net Guenter Roeck writes: > Hi, > > On Sat, Aug 03, 2019 at 08:31:01PM -0400, Hui Peng wrote: >> The `ar_usb` field of `ath10k_usb_pipe_usb_pipe` objects >> are initialized to point to the containing `ath10k_usb` object >> according to endpoint descriptors read from the device side, as shown >> below in `ath10k_usb_setup_pipe_resources`: >> >> for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { >> endpoint = &iface_desc->endpoint[i].desc; >> >> // get the address from endpoint descriptor >> pipe_num = ath10k_usb_get_logical_pipe_num(ar_usb, >> endpoint->bEndpointAddress, >> &urbcount); >> ...... >> // select the pipe object >> pipe = &ar_usb->pipes[pipe_num]; >> >> // initialize the ar_usb field >> pipe->ar_usb = ar_usb; >> } >> >> The driver assumes that the addresses reported in endpoint >> descriptors from device side to be complete. If a device is >> malicious and does not report complete addresses, it may trigger >> NULL-ptr-deref `ath10k_usb_alloc_urb_from_pipe` and >> `ath10k_usb_free_urb_to_pipe`. >> >> This patch fixes the bug by preventing potential NULL-ptr-deref. >> >> Signed-off-by: Hui Peng >> Reported-by: Hui Peng >> Reported-by: Mathias Payer > > This patch fixes CVE-2019-15099, which has CVSS scores of 7.5 (CVSS 3.0) > and 7.8 (CVSS 2.0). Yet, I don't find it in the upstream kernel or in Linux > next. > > Is the patch going to be applied to the upstream kernel anytime soon ? Same answer as in patch 1: https://patchwork.kernel.org/patch/11074655/ -- https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k