From nobody Sun Apr 19 09:20:08 2026 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 475D8C433EF for ; Mon, 4 Jul 2022 12:33:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234462AbiGDMdg (ORCPT ); Mon, 4 Jul 2022 08:33:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43022 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233824AbiGDMdd (ORCPT ); Mon, 4 Jul 2022 08:33:33 -0400 X-Greylist: delayed 1886 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Mon, 04 Jul 2022 05:33:31 PDT Received: from mail-m975.mail.163.com (mail-m975.mail.163.com [123.126.97.5]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 1F15D110A; Mon, 4 Jul 2022 05:33:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=163.com; s=s110527; h=From:Subject:Date:Message-Id:MIME-Version; bh=I8+m1 YAsVZ4gl1y1umKlRTUNyEHJgsOKvTyV1H7WmOY=; b=a7yHIyd+riruU9BRhBA3c QjZM9E+QfId6cMC/g7FBzsYIQLux1c4EoMi10gSb+L5u1RWRSW2KEybR1NpOsCWy urjRBkg0aWk2iaI3tQf2oVEAaMQ/cN4OYbmNrP7jFyrI/Ix8jLKNGh5cY/qWmoI2 vhDkX1Y9e8NABbDJvXJWW4= Received: from localhost.localdomain (unknown [123.112.69.106]) by smtp5 (Coremail) with SMTP id HdxpCgBHyTYB3sJix5uRMQ--.31990S4; Mon, 04 Jul 2022 20:33:11 +0800 (CST) From: Jianglei Nie To: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Jianglei Nie Subject: [PATCH] net: macsec: fix potential resource leak in macsec_add_rxsa() and macsec_add_txsa() Date: Mon, 4 Jul 2022 20:33:04 +0800 Message-Id: <20220704123304.2239147-1-niejianglei2021@163.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: HdxpCgBHyTYB3sJix5uRMQ--.31990S4 X-Coremail-Antispam: 1Uf129KBjvJXoW7Ar4rWF4fCF17Zw1xZr43ZFb_yoW8Jw4Dpa 15ZwsrCF1qqrWI93ZrCw4UWF1rXayUtryagry7C3yfua4kJw1rWFy0kFyI9Fy5AryxGF48 ZrWvyr47AFn8C37anT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDUYxBIdaVFxhVjvjDU0xZFpf9x0zRxOz-UUUUU= X-Originating-IP: [123.112.69.106] X-CM-SenderInfo: xqlhyxxdqjzvrlsqjii6rwjhhfrp/xtbBOQU0jF-POU5l6QABsu Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" init_rx_sa() allocates relevant resource for rx_sa->stats and rx_sa-> key.tfm with alloc_percpu() and macsec_alloc_tfm(). When some error occurs after init_rx_sa() is called in macsec_add_rxsa(), the function released rx_sa with kfree() without releasing rx_sa->stats and rx_sa-> key.tfm, which will lead to a resource leak. We should call macsec_rxsa_put() instead of kfree() to decrease the ref count of rx_sa and release the relevant resource if the refcount is 0. The same bug exists in macsec_add_txsa() for tx_sa as well. This patch fixes the above two bugs. Signed-off-by: Jianglei Nie --- drivers/net/macsec.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/macsec.c b/drivers/net/macsec.c index 817577e713d7..ac3ff624a8dd 100644 --- a/drivers/net/macsec.c +++ b/drivers/net/macsec.c @@ -1842,7 +1842,7 @@ static int macsec_add_rxsa(struct sk_buff *skb, struc= t genl_info *info) return 0; =20 cleanup: - kfree(rx_sa); + macsec_rxsa_put(rx_sa); rtnl_unlock(); return err; } @@ -2085,7 +2085,7 @@ static int macsec_add_txsa(struct sk_buff *skb, struc= t genl_info *info) =20 cleanup: secy->operational =3D was_operational; - kfree(tx_sa); + macsec_txsa_put(tx_sa); rtnl_unlock(); return err; } --=20 2.25.1