From owner-svn-src-stable-12@freebsd.org Mon Mar 18 09:21:31 2019 Return-Path: Delivered-To: svn-src-stable-12@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id D4EB01536B63; Mon, 18 Mar 2019 09:21:31 +0000 (UTC) (envelope-from ae@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 76DD877916; Mon, 18 Mar 2019 09:21:31 +0000 (UTC) (envelope-from ae@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 517541F4FC; Mon, 18 Mar 2019 09:21:31 +0000 (UTC) (envelope-from ae@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x2I9LV9F098231; Mon, 18 Mar 2019 09:21:31 GMT (envelope-from ae@FreeBSD.org) Received: (from ae@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x2I9LVfK098230; Mon, 18 Mar 2019 09:21:31 GMT (envelope-from ae@FreeBSD.org) Message-Id: <201903180921.x2I9LVfK098230@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: ae set sender to ae@FreeBSD.org using -f From: "Andrey V. Elsukov" Date: Mon, 18 Mar 2019 09:21:31 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r345256 - stable/12/sys/netpfil/ipfw/nat64 X-SVN-Group: stable-12 X-SVN-Commit-Author: ae X-SVN-Commit-Paths: stable/12/sys/netpfil/ipfw/nat64 X-SVN-Commit-Revision: 345256 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 76DD877916 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.94 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.998,0]; NEURAL_HAM_SHORT(-0.94)[-0.942,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] X-BeenThere: svn-src-stable-12@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for only the 12-stable src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Mar 2019 09:21:32 -0000 Author: ae Date: Mon Mar 18 09:21:30 2019 New Revision: 345256 URL: https://svnweb.freebsd.org/changeset/base/345256 Log: MFC r345003: Add NULL pointer check to nat64_output(). It is possible that a processed packet was originated by local host, in this case m->m_pkthdr.rcvif is NULL. Check and set it to V_loif to avoid NULL pointer dereference in IP input code, since it is expected that packet has valid receiving interface when netisr processes it. Obtained from: Yandex LLC Sponsored by: Yandex LLC Modified: stable/12/sys/netpfil/ipfw/nat64/nat64_translate.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/netpfil/ipfw/nat64/nat64_translate.c ============================================================================== --- stable/12/sys/netpfil/ipfw/nat64/nat64_translate.c Mon Mar 18 05:03:55 2019 (r345255) +++ stable/12/sys/netpfil/ipfw/nat64/nat64_translate.c Mon Mar 18 09:21:30 2019 (r345256) @@ -219,6 +219,8 @@ nat64_output(struct ifnet *ifp, struct mbuf *m, struct } if (logdata != NULL) nat64_log(logdata, m, af); + if (m->m_pkthdr.rcvif == NULL) + m->m_pkthdr.rcvif = V_loif; ret = netisr_queue(ret, m); if (ret != 0) NAT64STAT_INC(stats, oerrors);