Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753786AbdHKV4i (ORCPT ); Fri, 11 Aug 2017 17:56:38 -0400 Received: from shards.monkeyblade.net ([184.105.139.130]:60810 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753256AbdHKV4h (ORCPT ); Fri, 11 Aug 2017 17:56:37 -0400 Date: Fri, 11 Aug 2017 14:56:35 -0700 (PDT) Message-Id: <20170811.145635.1954762995141694287.davem@davemloft.net> To: vasilyev@ispras.ru Cc: isdn@linux-pingi.de, geliangtang@gmail.com, johannes.berg@intel.com, stephen@networkplumber.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, ldv-project@linuxtesting.org Subject: Re: [PATCH] mISDN: Fix null pointer dereference at mISDN_FsmNew From: David Miller In-Reply-To: <1502456242-1695-1-git-send-email-vasilyev@ispras.ru> References: <1502456242-1695-1-git-send-email-vasilyev@ispras.ru> X-Mailer: Mew version 6.7 on Emacs 25.2 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Fri, 11 Aug 2017 14:56:36 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 446 Lines: 15 From: Anton Vasilyev Date: Fri, 11 Aug 2017 15:57:22 +0300 > If mISDN_FsmNew() fails to allocate memory for jumpmatrix > then null pointer dereference will occur on any write to > jumpmatrix. > > The patch adds check on successful allocation and > corresponding error handling. > > Found by Linux Driver Verification project (linuxtesting.org). > > Signed-off-by: Anton Vasilyev Applied, thank you.