From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 58E3BC47080 for ; Tue, 1 Jun 2021 05:51:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 31708613AB for ; Tue, 1 Jun 2021 05:51:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233011AbhFAFvr (ORCPT ); Tue, 1 Jun 2021 01:51:47 -0400 Received: from mail.kernel.org ([198.145.29.99]:56798 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232915AbhFAFvo (ORCPT ); Tue, 1 Jun 2021 01:51:44 -0400 Received: by mail.kernel.org (Postfix) with ESMTPS id 9F246613AB; Tue, 1 Jun 2021 05:50:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1622526603; bh=VCzH3BoPB2RIkvJY/BJI5kw9URxgsqORyWnXV23YrXo=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=pNOP2ymdMgMzC+vdpEpQ0qwOcs2aKyGRV2rch8h7m3jVexxV1WcObbdP9J9YUWjCj 1RRhh/bv33KrCYLsTQMIShCZZXu19onh2uozrNj5nXYlt2xSgU2JEqLV/+5GTTCbFs AOD0OyCLC+C36Bi0NbVM4AtlukMLKKy5PDp4Ig/qI/jUBjHUCQquf8rTTtUFKaWWQC LzCm28NiZTHmJS/LovD4zjpsLQb+Vg/wBIqcADATkdHRRqC3XE+goF66Ap58sBpu/6 voBB6rgvtib/Onzb2WMsCh6HvUO+y2vM4Ka3S9rgrSHH2AOtONxM8e74JOCnkMqIBL yD9gDaCWoRl0Q== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [RESEND PATCH] nfc: fix NULL ptr dereference in llcp_sock_getname() after failed connect From: patchwork-bot+netdevbpf@kernel.org Message-Id: <162252660360.4642.10005433752607898965.git-patchwork-notify@kernel.org> Date: Tue, 01 Jun 2021 05:50:03 +0000 References: <20210531072138.5219-1-krzysztof.kozlowski@canonical.com> In-Reply-To: <20210531072138.5219-1-krzysztof.kozlowski@canonical.com> To: Krzysztof Kozlowski Cc: davem@davemloft.net, kuba@kernel.org, linville@tuxdriver.com, sameo@linux.intel.com, linux-nfc@lists.01.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, thadeu.cascardo@canonical.com, stable@vger.kernel.org, syzbot+80fb126e7f7d8b1a5914@syzkaller.appspotmail.com, butterflyhuangxx@gmail.com Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello: This patch was applied to netdev/net.git (refs/heads/master): On Mon, 31 May 2021 09:21:38 +0200 you wrote: > It's possible to trigger NULL pointer dereference by local unprivileged > user, when calling getsockname() after failed bind() (e.g. the bind > fails because LLCP_SAP_MAX used as SAP): > > BUG: kernel NULL pointer dereference, address: 0000000000000000 > CPU: 1 PID: 426 Comm: llcp_sock_getna Not tainted 5.13.0-rc2-next-20210521+ #9 > Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1 04/01/2014 > Call Trace: > llcp_sock_getname+0xb1/0xe0 > __sys_getpeername+0x95/0xc0 > ? lockdep_hardirqs_on_prepare+0xd5/0x180 > ? syscall_enter_from_user_mode+0x1c/0x40 > __x64_sys_getpeername+0x11/0x20 > do_syscall_64+0x36/0x70 > entry_SYSCALL_64_after_hwframe+0x44/0xae > > [...] Here is the summary with links: - [RESEND] nfc: fix NULL ptr dereference in llcp_sock_getname() after failed connect https://git.kernel.org/netdev/net/c/4ac06a1e013c You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html