From owner-svn-src-stable@freebsd.org Sat Apr 7 20:03:36 2018 Return-Path: Delivered-To: svn-src-stable@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 E3838F809C6; Sat, 7 Apr 2018 20:03:35 +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 TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 86DFF737E3; Sat, 7 Apr 2018 20:03:35 +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 81AF4256A2; Sat, 7 Apr 2018 20:03:35 +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 w37K3ZnC077755; Sat, 7 Apr 2018 20:03:35 GMT (envelope-from tuexen@FreeBSD.org) Received: (from tuexen@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id w37K3ZWx077754; Sat, 7 Apr 2018 20:03:35 GMT (envelope-from tuexen@FreeBSD.org) Message-Id: <201804072003.w37K3ZWx077754@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: tuexen set sender to tuexen@FreeBSD.org using -f From: Michael Tuexen Date: Sat, 7 Apr 2018 20:03:35 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r332218 - stable/11/sys/netinet X-SVN-Group: stable-11 X-SVN-Commit-Author: tuexen X-SVN-Commit-Paths: stable/11/sys/netinet X-SVN-Commit-Revision: 332218 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.25 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 07 Apr 2018 20:03:36 -0000 Author: tuexen Date: Sat Apr 7 20:03:35 2018 New Revision: 332218 URL: https://svnweb.freebsd.org/changeset/base/332218 Log: MFC r324971: Fix a bug reported by Felix Weinrank using the libfuzzer on the userland stack. Modified: stable/11/sys/netinet/sctp_auth.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/netinet/sctp_auth.c ============================================================================== --- stable/11/sys/netinet/sctp_auth.c Sat Apr 7 20:02:08 2018 (r332217) +++ stable/11/sys/netinet/sctp_auth.c Sat Apr 7 20:03:35 2018 (r332218) @@ -1606,9 +1606,9 @@ sctp_zero_m(struct mbuf *m, uint32_t m_offset, uint32_ /* now use the rest of the mbuf chain */ while ((m_tmp != NULL) && (size > 0)) { data = mtod(m_tmp, uint8_t *)+m_offset; - if (size > (uint32_t)SCTP_BUF_LEN(m_tmp)) { - memset(data, 0, SCTP_BUF_LEN(m_tmp)); - size -= SCTP_BUF_LEN(m_tmp); + if (size > (uint32_t)(SCTP_BUF_LEN(m_tmp) - m_offset)) { + memset(data, 0, SCTP_BUF_LEN(m_tmp) - m_offset); + size -= SCTP_BUF_LEN(m_tmp) - m_offset; } else { memset(data, 0, size); size = 0;