From owner-svn-src-all@freebsd.org Fri Apr 19 17:21:37 2019 Return-Path: Delivered-To: svn-src-all@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 34E5A157323C; Fri, 19 Apr 2019 17:21:37 +0000 (UTC) (envelope-from tuexen@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 CCEBD88D73; Fri, 19 Apr 2019 17:21:36 +0000 (UTC) (envelope-from tuexen@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 47B5F1763; Fri, 19 Apr 2019 17:21:36 +0000 (UTC) (envelope-from tuexen@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x3JHLaef027930; Fri, 19 Apr 2019 17:21:36 GMT (envelope-from tuexen@FreeBSD.org) Received: (from tuexen@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x3JHLa7F027929; Fri, 19 Apr 2019 17:21:36 GMT (envelope-from tuexen@FreeBSD.org) Message-Id: <201904191721.x3JHLa7F027929@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: tuexen set sender to tuexen@FreeBSD.org using -f From: Michael Tuexen Date: Fri, 19 Apr 2019 17:21:36 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r346401 - head/sys/netinet6 X-SVN-Group: head X-SVN-Commit-Author: tuexen X-SVN-Commit-Paths: head/sys/netinet6 X-SVN-Commit-Revision: 346401 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: CCEBD88D73 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.95 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.95)[-0.948,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 Apr 2019 17:21:37 -0000 Author: tuexen Date: Fri Apr 19 17:21:35 2019 New Revision: 346401 URL: https://svnweb.freebsd.org/changeset/base/346401 Log: Avoid a buffer overwrite in rip6_output() when computing the checksum as requested by the user via the IPPROTO_IPV6 level socket option IPV6_CHECKSUM. The check if there are enough bytes in the packet to store the checksum at the requested offset was wrong by 1. Reviewed by: bz@ MFC after: 1 week Sponsored by: Netflix, Inc. Differential Revision: https://reviews.freebsd.org/D19967 Modified: head/sys/netinet6/raw_ip6.c Modified: head/sys/netinet6/raw_ip6.c ============================================================================== --- head/sys/netinet6/raw_ip6.c Fri Apr 19 17:17:41 2019 (r346400) +++ head/sys/netinet6/raw_ip6.c Fri Apr 19 17:21:35 2019 (r346401) @@ -495,7 +495,7 @@ rip6_output(struct mbuf *m, struct socket *so, ...) off = offsetof(struct icmp6_hdr, icmp6_cksum); else off = in6p->in6p_cksum; - if (plen < off + 1) { + if (plen < off + 2) { error = EINVAL; goto bad; }