From owner-svn-src-all@freebsd.org Tue Aug 20 17:51:34 2019 Return-Path: Delivered-To: svn-src-all@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 106CDD7109; Tue, 20 Aug 2019 17:51:34 +0000 (UTC) (envelope-from gordon@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 46Cddd6b48z4cFv; Tue, 20 Aug 2019 17:51:33 +0000 (UTC) (envelope-from gordon@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 C3C2D6DEB; Tue, 20 Aug 2019 17:51:33 +0000 (UTC) (envelope-from gordon@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x7KHpXj8063059; Tue, 20 Aug 2019 17:51:33 GMT (envelope-from gordon@FreeBSD.org) Received: (from gordon@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x7KHpX7s063056; Tue, 20 Aug 2019 17:51:33 GMT (envelope-from gordon@FreeBSD.org) Message-Id: <201908201751.x7KHpX7s063056@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: gordon set sender to gordon@FreeBSD.org using -f From: Gordon Tetlow Date: Tue, 20 Aug 2019 17:51:33 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-releng@freebsd.org Subject: svn commit: r351261 - in releng: 11.2/sys/kern 11.3/sys/kern 12.0/sys/kern X-SVN-Group: releng X-SVN-Commit-Author: gordon X-SVN-Commit-Paths: in releng: 11.2/sys/kern 11.3/sys/kern 12.0/sys/kern X-SVN-Commit-Revision: 351261 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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: Tue, 20 Aug 2019 17:51:34 -0000 Author: gordon Date: Tue Aug 20 17:51:32 2019 New Revision: 351261 URL: https://svnweb.freebsd.org/changeset/base/351261 Log: Fix reference count overflow in mqueuefs. Approved by: so Security: FreeBSD-SA-19:24.mqueuefs Security: CVE-2019-5603 Modified: releng/11.2/sys/kern/uipc_mqueue.c releng/11.3/sys/kern/uipc_mqueue.c releng/12.0/sys/kern/uipc_mqueue.c Modified: releng/11.2/sys/kern/uipc_mqueue.c ============================================================================== --- releng/11.2/sys/kern/uipc_mqueue.c Tue Aug 20 17:50:33 2019 (r351260) +++ releng/11.2/sys/kern/uipc_mqueue.c Tue Aug 20 17:51:32 2019 (r351261) @@ -2788,7 +2788,7 @@ freebsd32_kmq_timedsend(struct thread *td, if (uap->abs_timeout != NULL) { error = copyin(uap->abs_timeout, &ets32, sizeof(ets32)); if (error != 0) - return (error); + goto out; CP(ets32, ets, tv_sec); CP(ets32, ets, tv_nsec); abs_timeout = &ets; @@ -2797,6 +2797,7 @@ freebsd32_kmq_timedsend(struct thread *td, waitok = !(fp->f_flag & O_NONBLOCK); error = mqueue_send(mq, uap->msg_ptr, uap->msg_len, uap->msg_prio, waitok, abs_timeout); +out: fdrop(fp, td); return (error); } Modified: releng/11.3/sys/kern/uipc_mqueue.c ============================================================================== --- releng/11.3/sys/kern/uipc_mqueue.c Tue Aug 20 17:50:33 2019 (r351260) +++ releng/11.3/sys/kern/uipc_mqueue.c Tue Aug 20 17:51:32 2019 (r351261) @@ -2788,7 +2788,7 @@ freebsd32_kmq_timedsend(struct thread *td, if (uap->abs_timeout != NULL) { error = copyin(uap->abs_timeout, &ets32, sizeof(ets32)); if (error != 0) - return (error); + goto out; CP(ets32, ets, tv_sec); CP(ets32, ets, tv_nsec); abs_timeout = &ets; @@ -2797,6 +2797,7 @@ freebsd32_kmq_timedsend(struct thread *td, waitok = !(fp->f_flag & O_NONBLOCK); error = mqueue_send(mq, uap->msg_ptr, uap->msg_len, uap->msg_prio, waitok, abs_timeout); +out: fdrop(fp, td); return (error); } Modified: releng/12.0/sys/kern/uipc_mqueue.c ============================================================================== --- releng/12.0/sys/kern/uipc_mqueue.c Tue Aug 20 17:50:33 2019 (r351260) +++ releng/12.0/sys/kern/uipc_mqueue.c Tue Aug 20 17:51:32 2019 (r351261) @@ -2798,7 +2798,7 @@ freebsd32_kmq_timedsend(struct thread *td, if (uap->abs_timeout != NULL) { error = copyin(uap->abs_timeout, &ets32, sizeof(ets32)); if (error != 0) - return (error); + goto out; CP(ets32, ets, tv_sec); CP(ets32, ets, tv_nsec); abs_timeout = &ets; @@ -2807,6 +2807,7 @@ freebsd32_kmq_timedsend(struct thread *td, waitok = !(fp->f_flag & O_NONBLOCK); error = mqueue_send(mq, uap->msg_ptr, uap->msg_len, uap->msg_prio, waitok, abs_timeout); +out: fdrop(fp, td); return (error); }