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=-9.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,T_DKIMWL_WL_HIGH,URIBL_BLOCKED,USER_AGENT_GIT 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 B2BF9C072B1 for ; Thu, 30 May 2019 04:40:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8183C259B4 for ; Thu, 30 May 2019 04:40:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559191246; bh=NY+bzGCLjPOwmO4DfrTLzjvI0VS/oC+/ExlyrjN8xHU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=DWMWoEEusYhJ7un8qYlYvWX0uBBBXRr0Mc3Ai2oCjEQqD0iw1zmYv/SedVQNFxrqS 2xT6V4ilf+r0UwEOo8YfGEO1+NHUfDAvYjZxAzvjID9XeVX+8H0e1qIIDJfnlLRlgB QHTi3oFgpwWCH4b2FegNKNueArIBpvbfrG43zzNU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728314AbfE3DMa (ORCPT ); Wed, 29 May 2019 23:12:30 -0400 Received: from mail.kernel.org ([198.145.29.99]:55246 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729058AbfE3DM3 (ORCPT ); Wed, 29 May 2019 23:12:29 -0400 Received: from localhost (ip67-88-213-2.z213-88-67.customer.algx.net [67.88.213.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 67CE8218B6; Thu, 30 May 2019 03:12:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1559185949; bh=NY+bzGCLjPOwmO4DfrTLzjvI0VS/oC+/ExlyrjN8xHU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hmAdeJTB9h4RdHZzpVsLknpTOx+zgsix2PACuYvP1VfetU08/wcZArCFDXYDKQFfI zwVthCc1HI9CT5GU9uJgZPAaKJxq+2vLT5NO+xkW413k75Ss4jhGFZgkBQmsMNLlpk BzLCpguTh4ZJcIkczPFsxArWX/i6tsqlsybWfank= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Kangjie Lu , Mika Westerberg , Sasha Levin Subject: [PATCH 5.1 334/405] thunderbolt: property: Fix a NULL pointer dereference Date: Wed, 29 May 2019 20:05:32 -0700 Message-Id: <20190530030557.612661571@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190530030540.291644921@linuxfoundation.org> References: <20190530030540.291644921@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org [ Upstream commit 106204b56f60abf1bead7dceb88f2be3e34433da ] In case kzalloc fails, the fix releases resources and returns -ENOMEM to avoid the NULL pointer dereference. Signed-off-by: Kangjie Lu Signed-off-by: Mika Westerberg Signed-off-by: Sasha Levin --- drivers/thunderbolt/property.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/thunderbolt/property.c b/drivers/thunderbolt/property.c index ead18c532b53d..8c077c4f3b5b2 100644 --- a/drivers/thunderbolt/property.c +++ b/drivers/thunderbolt/property.c @@ -548,6 +548,11 @@ int tb_property_add_data(struct tb_property_dir *parent, const char *key, property->length = size / 4; property->value.data = kzalloc(size, GFP_KERNEL); + if (!property->value.data) { + kfree(property); + return -ENOMEM; + } + memcpy(property->value.data, buf, buflen); list_add_tail(&property->list, &parent->properties); -- 2.20.1