From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-1098017-1521803602-2-2086029877307945390 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, ME_NOAUTH 0.01, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='org', MailFrom='org' X-Spam-charsets: plain='UTF-8' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: stable-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1521803602; b=o1aaJ21yhYLV9hchToIpgiMjFf1OoahlVOFkpRwKcUw3DwP MayWWBbwG1heRdjxDIOczbUpbO6LdqdRWIrrt9l1OpgzDFBjttnVFDxTPuGY0g7/ 685LiWG86RwKnCsCzaSCDPaA03i/kHxb+qjOyiHBOpzvJMUMjwb78HcWKO5ZtI9B uC6A3xmeBbvVjQ9yxrEsG1aasG3lGcaplg1d0YZV6843DtyctBvqUFpnEZhmJKVo d4JJu7DEOBqBRL2+O7lxWNSi7PKiJ5GhN7siZjhgdCLyvC+ULAuEbb0HuCJm7rUQ 8byNmUKTo2wxO8YzskXNY4tNXni3TwhvvF+wNSw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-type:sender :list-id; s=arctest; t=1521803602; bh=6W7/T3weJQreNfoYx7ttoSHAef hGLUQZvgt0OFW/cS4=; b=jMymtJGxi1RmP8IweSjNNnKrW8tOpB/vJILmqDFvtV YcEfoVCdTQeAru5eSM+4IQ33wznBmGvVbdl4uZeYjdGBhLraBzFQFSQTU3SgzBFA Yi6moAQxpCZ0imJH9KL5DUm8gpfcvxut6v26brvLaniE0Moxcp+2/0Bqe+SdfOb2 Oz2hmxHVyLT9LpC09lLhfhOfTr/lGckN2wnDp3CMrVgh1fqn1BYKId3IB7KpEdLd /DyhazGE6HcBIKOs/lz9/Waj8CsmT7zO00lmIA1T1cMetxDj4DWJ8CJMqGfARd9/ K7oFj9CEHpajFxXueABJ3ujjAdM1p5gsrGxKvDC53zGA== ARC-Authentication-Results: i=1; mx5.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 Authentication-Results: mx5.messagingengine.com; arc=none (no signatures found); dkim=none (no signatures found); dmarc=none (p=none,has-list-id=yes,d=none) header.from=linuxfoundation.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=stable-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=linuxfoundation.org header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 X-ME-VSCategory: clean Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932756AbeCWKKj (ORCPT ); Fri, 23 Mar 2018 06:10:39 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:42606 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932734AbeCWKKd (ORCPT ); Fri, 23 Mar 2018 06:10:33 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Carpenter , Steve French , Sasha Levin Subject: [PATCH 4.9 125/177] cifs: small underflow in cnvrtDosUnixTm() Date: Fri, 23 Mar 2018 10:54:13 +0100 Message-Id: <20180323094210.751543805@linuxfoundation.org> X-Mailer: git-send-email 2.16.2 In-Reply-To: <20180323094205.090519271@linuxfoundation.org> References: <20180323094205.090519271@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dan Carpenter [ Upstream commit 564277eceeca01e02b1ef3e141cfb939184601b4 ] January is month 1. There is no zero-th month. If someone passes a zero month then it means we read from one space before the start of the total_days_of_prev_months[] array. We may as well also be strict about days as well. Fixes: 1bd5bbcb6531 ("[CIFS] Legacy time handling for Win9x and OS/2 part 1") Signed-off-by: Dan Carpenter Signed-off-by: Steve French Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- fs/cifs/netmisc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/fs/cifs/netmisc.c +++ b/fs/cifs/netmisc.c @@ -980,10 +980,10 @@ struct timespec cnvrtDosUnixTm(__le16 le cifs_dbg(VFS, "illegal hours %d\n", st->Hours); days = sd->Day; month = sd->Month; - if ((days > 31) || (month > 12)) { + if (days < 1 || days > 31 || month < 1 || month > 12) { cifs_dbg(VFS, "illegal date, month %d day: %d\n", month, days); - if (month > 12) - month = 12; + days = clamp(days, 1, 31); + month = clamp(month, 1, 12); } month -= 1; days += total_days_of_prev_months[month];