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 48A8DE95A8E for ; Mon, 9 Oct 2023 13:27:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1376770AbjJIN1Z (ORCPT ); Mon, 9 Oct 2023 09:27:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58014 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376769AbjJIN1Y (ORCPT ); Mon, 9 Oct 2023 09:27:24 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CFA108F for ; Mon, 9 Oct 2023 06:27:22 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1CBF1C433C8; Mon, 9 Oct 2023 13:27:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1696858042; bh=aJdlbLip+vneYTsEz8avz7r+Wp416gWt+77vG2yymcg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1FLsotOjg9RQTqzzVDGFuUtOTIGNIq+YhHKI1QJFwI7KfNtArM6n0TxlbcVLyku3M yjPWcZdP9ikcGJ0aEaZDwA09Dn5uR698xuPP9Z3nCtFmP9Hs27c/vvr1gfjw32NYwv q9eQ1A5e7ZuMAhnAkapUbVieiEXLhzdUqY38P4Ew= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, luosili , Namjae Jeon , Steve French Subject: [PATCH 5.15 74/75] ksmbd: fix uaf in smb20_oplock_break_ack Date: Mon, 9 Oct 2023 15:02:36 +0200 Message-ID: <20231009130113.878598425@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231009130111.200710898@linuxfoundation.org> References: <20231009130111.200710898@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: luosili commit c69813471a1ec081a0b9bf0c6bd7e8afd818afce upstream. drop reference after use opinfo. Signed-off-by: luosili Signed-off-by: Namjae Jeon Signed-off-by: Steve French Signed-off-by: Greg Kroah-Hartman --- fs/ksmbd/smb2pdu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/fs/ksmbd/smb2pdu.c +++ b/fs/ksmbd/smb2pdu.c @@ -8058,10 +8058,10 @@ static void smb20_oplock_break_ack(struc goto err_out; } - opinfo_put(opinfo); - ksmbd_fd_put(work, fp); opinfo->op_state = OPLOCK_STATE_NONE; wake_up_interruptible_all(&opinfo->oplock_q); + opinfo_put(opinfo); + ksmbd_fd_put(work, fp); rsp->StructureSize = cpu_to_le16(24); rsp->OplockLevel = rsp_oplevel;