From owner-svn-src-head@FreeBSD.ORG  Tue Sep  9 05:21:32 2014
Return-Path: <owner-svn-src-head@FreeBSD.ORG>
Delivered-To: svn-src-head@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 4A10FB33;
 Tue,  9 Sep 2014 05:21:32 +0000 (UTC)
Received: from svn.freebsd.org (svn.freebsd.org
 [IPv6:2001:1900:2254:2068::e6a:0])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 354B0EE4;
 Tue,  9 Sep 2014 05:21:32 +0000 (UTC)
Received: from svn.freebsd.org ([127.0.1.70])
 by svn.freebsd.org (8.14.9/8.14.9) with ESMTP id s895LWSR037336;
 Tue, 9 Sep 2014 05:21:32 GMT (envelope-from kevlo@FreeBSD.org)
Received: (from kevlo@localhost)
 by svn.freebsd.org (8.14.9/8.14.9/Submit) id s895LWgQ037335;
 Tue, 9 Sep 2014 05:21:32 GMT (envelope-from kevlo@FreeBSD.org)
Message-Id: <201409090521.s895LWgQ037335@svn.freebsd.org>
X-Authentication-Warning: svn.freebsd.org: kevlo set sender to
 kevlo@FreeBSD.org using -f
From: Kevin Lo <kevlo@FreeBSD.org>
Date: Tue, 9 Sep 2014 05:21:32 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: svn commit: r271303 - head/sys/dev/usb/wlan
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
 <svn-src-head.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head/>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 09 Sep 2014 05:21:32 -0000

Author: kevlo
Date: Tue Sep  9 05:21:31 2014
New Revision: 271303
URL: http://svnweb.freebsd.org/changeset/base/271303

Log:
  Drop frames that have larger than MCLBYTES.

Modified:
  head/sys/dev/usb/wlan/if_urtwn.c

Modified: head/sys/dev/usb/wlan/if_urtwn.c
==============================================================================
--- head/sys/dev/usb/wlan/if_urtwn.c	Tue Sep  9 04:20:53 2014	(r271302)
+++ head/sys/dev/usb/wlan/if_urtwn.c	Tue Sep  9 05:21:31 2014	(r271303)
@@ -660,6 +660,10 @@ urtwn_rx_frame(struct urtwn_softc *sc, u
 		ifp->if_ierrors++;
 		return (NULL);
 	}
+	if (pktlen < sizeof(*wh) || pktlen > MCLBYTES) {
+		ifp->if_ierrors++;
+		return (NULL);
+	}
 
 	rate = MS(rxdw3, R92C_RXDW3_RATE);
 	infosz = MS(rxdw0, R92C_RXDW0_INFOSZ) * 8;