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[2620:137:e000::1:20]) by mx.google.com with ESMTP id b30-20020a631b5e000000b004fb42dcc3b0si519270pgm.710.2023.03.30.13.53.15; Thu, 30 Mar 2023 13:53:27 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=M8YQkpaV; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229927AbjC3UxC (ORCPT + 99 others); Thu, 30 Mar 2023 16:53:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51814 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229737AbjC3UxB (ORCPT ); Thu, 30 Mar 2023 16:53:01 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 394A49029; Thu, 30 Mar 2023 13:53:00 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id CC524620BE; Thu, 30 Mar 2023 20:52:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DBCAEC4339B; Thu, 30 Mar 2023 20:52:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1680209579; bh=M3Gwz8bg9RQOf786ZiVKLz+aclgydGf92Mqzbu8XHcg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=M8YQkpaV/iD350A2mNdyNvAiwzQQzx98i/ZPveWmVZeAWtcU1nbHhi45CTXpqgw9h PfdO27N6TrB/AKqntWVKZ0sVwfGlrkhtO8X7kkbagkYGVlp5djUJAnFC8Oiz0gdZ4t zwKg9yDmEymYHpl1rM3xjto2jjTSbExJrgIxsfas= Date: Thu, 30 Mar 2023 22:52:56 +0200 From: Greg Kroah-Hartman To: Danila Chernetsov Cc: stable@vger.kernel.org, Dinghao Liu , linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, lvc-project@linuxtesting.org Subject: Re: [PATCH 5.10 1/1] staging: rtl8192u: Add null check in rtl8192_usb_initendpoints Message-ID: References: <20230330201107.17647-1-listdansp@mail.ru> <20230330201107.17647-2-listdansp@mail.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230330201107.17647-2-listdansp@mail.ru> X-Spam-Status: No, score=-2.5 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Mar 30, 2023 at 08:11:07PM +0000, Danila Chernetsov wrote: > From: Dinghao Liu > > commit 4d5f81506835f7c1e5c71787bed84984faf05884 upstream. > > There is an allocation for priv->rx_urb[16] has no null check, > which may lead to a null pointer dereference. > > Signed-off-by: Dinghao Liu > Link: https://lore.kernel.org/r/20201226080258.6576-1-dinghao.liu@zju.edu.cn > Signed-off-by: Greg Kroah-Hartman > Signed-off-by: Danila Chernetsov > --- > drivers/staging/rtl8192u/r8192U_core.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/staging/rtl8192u/r8192U_core.c b/drivers/staging/rtl8192u/r8192U_core.c > index 7f90af8a7c7c..e0fec7d172da 100644 > --- a/drivers/staging/rtl8192u/r8192U_core.c > +++ b/drivers/staging/rtl8192u/r8192U_core.c > @@ -1608,6 +1608,8 @@ static short rtl8192_usb_initendpoints(struct net_device *dev) > void *oldaddr, *newaddr; > > priv->rx_urb[16] = usb_alloc_urb(0, GFP_KERNEL); > + if (!priv->rx_urb[16]) > + return -ENOMEM; This was not marked for stable as it's impossible to hit in real-life. So absent that, it's not needed in any stable kernel tree, unless you can prove otherwise? thanks, greg k-h