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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EE1A9C433EF for ; Mon, 13 Jun 2022 11:42:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1355642AbiFMLmO (ORCPT ); Mon, 13 Jun 2022 07:42:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40508 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1354217AbiFMLe7 (ORCPT ); Mon, 13 Jun 2022 07:34:59 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 422814475E; Mon, 13 Jun 2022 03:48:02 -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 ams.source.kernel.org (Postfix) with ESMTPS id 56148B80E07; Mon, 13 Jun 2022 10:48:00 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A4F40C34114; Mon, 13 Jun 2022 10:47:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1655117279; bh=oPb496vJ6O8l9Viexv5dOp3zu04IOVFFRg10fGCG5Ig=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jcnoALsAxH8d3GQ1WfHepkRPsDhI/2c3iFJnz/EOJWjn5PVOTN+aTRH6KqkLbF0qd XxQ+tEeyyzqh8hfLcDdTBYB5ZCCpSBXeElM3Y+hghq+RmolkkSlOOQdRR3y0m9BQyH y39oatPHsNWt9ym9fspVZGZB8i5QPToRqrTgHJxY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Haowen Bai , Kalle Valo , Sasha Levin Subject: [PATCH 4.19 013/287] ipw2x00: Fix potential NULL dereference in libipw_xmit() Date: Mon, 13 Jun 2022 12:07:17 +0200 Message-Id: <20220613094924.254867188@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220613094923.832156175@linuxfoundation.org> References: <20220613094923.832156175@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Haowen Bai [ Upstream commit e8366bbabe1d207cf7c5b11ae50e223ae6fc278b ] crypt and crypt->ops could be null, so we need to checking null before dereference Signed-off-by: Haowen Bai Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/1648797055-25730-1-git-send-email-baihaowen@meizu.com Signed-off-by: Sasha Levin --- drivers/net/wireless/intel/ipw2x00/libipw_tx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/intel/ipw2x00/libipw_tx.c b/drivers/net/wireless/intel/ipw2x00/libipw_tx.c index 84205aa508df..daa4f9eb08ff 100644 --- a/drivers/net/wireless/intel/ipw2x00/libipw_tx.c +++ b/drivers/net/wireless/intel/ipw2x00/libipw_tx.c @@ -397,7 +397,7 @@ netdev_tx_t libipw_xmit(struct sk_buff *skb, struct net_device *dev) /* Each fragment may need to have room for encryption * pre/postfix */ - if (host_encrypt) + if (host_encrypt && crypt && crypt->ops) bytes_per_frag -= crypt->ops->extra_mpdu_prefix_len + crypt->ops->extra_mpdu_postfix_len; -- 2.35.1