From owner-svn-src-stable-8@freebsd.org Tue Jul 21 23:42:22 2015 Return-Path: Delivered-To: svn-src-stable-8@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id A661B9A7E07; Tue, 21 Jul 2015 23:42:22 +0000 (UTC) (envelope-from delphij@FreeBSD.org) Received: from repo.freebsd.org (repo.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 707881532; Tue, 21 Jul 2015 23:42:22 +0000 (UTC) (envelope-from delphij@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.70]) by repo.freebsd.org (8.14.9/8.14.9) with ESMTP id t6LNgMKf019290; Tue, 21 Jul 2015 23:42:22 GMT (envelope-from delphij@FreeBSD.org) Received: (from delphij@localhost) by repo.freebsd.org (8.14.9/8.14.9/Submit) id t6LNgMDH019289; Tue, 21 Jul 2015 23:42:22 GMT (envelope-from delphij@FreeBSD.org) Message-Id: <201507212342.t6LNgMDH019289@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: delphij set sender to delphij@FreeBSD.org using -f From: Xin LI Date: Tue, 21 Jul 2015 23:42:22 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r285779 - in stable: 8/sys/netinet 9/sys/netinet X-SVN-Group: stable-8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-8@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: SVN commit messages for only the 8-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 21 Jul 2015 23:42:22 -0000 Author: delphij Date: Tue Jul 21 23:42:20 2015 New Revision: 285779 URL: https://svnweb.freebsd.org/changeset/base/285779 Log: Fix resource exhaustion due to sessions stuck in LAST_ACK state. Security: CVE-2015-5358 Security: SA-15:13.tcp Submitted by: Jonathan Looney (Juniper SIRT) Reviewed by: lstewart Modified: stable/8/sys/netinet/tcp_output.c Changes in other areas also in this revision: Modified: stable/9/sys/netinet/tcp_output.c Modified: stable/8/sys/netinet/tcp_output.c ============================================================================== --- stable/8/sys/netinet/tcp_output.c Tue Jul 21 23:42:17 2015 (r285778) +++ stable/8/sys/netinet/tcp_output.c Tue Jul 21 23:42:20 2015 (r285779) @@ -398,7 +398,7 @@ after_sack_rexmit: flags &= ~TH_FIN; } - if (len < 0) { + if (len <= 0) { /* * If FIN has been sent but not acked, * but we haven't been called to retransmit, @@ -408,9 +408,16 @@ after_sack_rexmit: * to (closed) window, and set the persist timer * if it isn't already going. If the window didn't * close completely, just wait for an ACK. + * + * We also do a general check here to ensure that + * we will set the persist timer when we have data + * to send, but a 0-byte window. This makes sure + * the persist timer is set even if the packet + * hits one of the "goto send" lines below. */ len = 0; - if (sendwin == 0) { + if ((sendwin == 0) && (TCPS_HAVEESTABLISHED(tp->t_state)) && + (off < (int) so->so_snd.sb_cc)) { tcp_timer_activate(tp, TT_REXMT, 0); tp->t_rxtshift = 0; tp->snd_nxt = tp->snd_una; From owner-svn-src-stable-8@freebsd.org Wed Jul 22 16:38:09 2015 Return-Path: Delivered-To: svn-src-stable-8@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id CF3859A7568; Wed, 22 Jul 2015 16:38:09 +0000 (UTC) (envelope-from gjb@FreeBSD.org) Received: from repo.freebsd.org (repo.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 BF84814C9; Wed, 22 Jul 2015 16:38:09 +0000 (UTC) (envelope-from gjb@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.70]) by repo.freebsd.org (8.14.9/8.14.9) with ESMTP id t6MGc9Bj030500; Wed, 22 Jul 2015 16:38:09 GMT (envelope-from gjb@FreeBSD.org) Received: (from gjb@localhost) by repo.freebsd.org (8.14.9/8.14.9/Submit) id t6MGc9rL030499; Wed, 22 Jul 2015 16:38:09 GMT (envelope-from gjb@FreeBSD.org) Message-Id: <201507221638.t6MGc9rL030499@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: gjb set sender to gjb@FreeBSD.org using -f From: Glen Barber Date: Wed, 22 Jul 2015 16:38:09 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r285800 - in stable: 10/release/doc/share/xml 8/release/doc/share/xml 9/release/doc/share/xml X-SVN-Group: stable-8 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable-8@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: SVN commit messages for only the 8-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Jul 2015 16:38:09 -0000 Author: gjb Date: Wed Jul 22 16:38:07 2015 New Revision: 285800 URL: https://svnweb.freebsd.org/changeset/base/285800 Log: Document FreeBSD-SA-15:13. Approved by: re (implicit) Sponsored by: The FreeBSD Foundation Modified: stable/8/release/doc/share/xml/security.xml Changes in other areas also in this revision: Modified: stable/10/release/doc/share/xml/security.xml stable/9/release/doc/share/xml/security.xml Modified: stable/8/release/doc/share/xml/security.xml ============================================================================== --- stable/8/release/doc/share/xml/security.xml Wed Jul 22 16:26:17 2015 (r285799) +++ stable/8/release/doc/share/xml/security.xml Wed Jul 22 16:38:07 2015 (r285800) @@ -267,6 +267,14 @@ 7 July 2015 Resolver remote denial of service + + + FreeBSD-SA-15:13.tcp + 21 July 2015 + resource exhaustion due to sessions stuck in + LAST_ACK state. +