From owner-svn-src-all@freebsd.org Fri Jul 12 18:17:37 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 EE16D15D20A9; Fri, 12 Jul 2019 18:17:36 +0000 (UTC) (envelope-from seanc@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 937C484EC3; Fri, 12 Jul 2019 18:17:36 +0000 (UTC) (envelope-from seanc@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 6050C1A3B3; Fri, 12 Jul 2019 18:17:36 +0000 (UTC) (envelope-from seanc@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x6CIHaY5028895; Fri, 12 Jul 2019 18:17:36 GMT (envelope-from seanc@FreeBSD.org) Received: (from seanc@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x6CIHa03028894; Fri, 12 Jul 2019 18:17:36 GMT (envelope-from seanc@FreeBSD.org) Message-Id: <201907121817.x6CIHa03028894@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: seanc set sender to seanc@FreeBSD.org using -f From: Sean Chittenden Date: Fri, 12 Jul 2019 18:17:36 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r349945 - head/usr.sbin/bhyve X-SVN-Group: head X-SVN-Commit-Author: seanc X-SVN-Commit-Paths: head/usr.sbin/bhyve X-SVN-Commit-Revision: 349945 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 937C484EC3 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)[-1.000,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; NEURAL_HAM_SHORT(-0.94)[-0.942,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] 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, 12 Jul 2019 18:17:37 -0000 Author: seanc (ports committer) Date: Fri Jul 12 18:17:35 2019 New Revision: 349945 URL: https://svnweb.freebsd.org/changeset/base/349945 Log: usr.sbin/bhyve: prevent use-after-free in virtio scsi request handling Coverity CID: 1393377 Approved by: araujo, jhb Differential Revision: https://reviews.freebsd.org/D20915 Modified: head/usr.sbin/bhyve/pci_virtio_scsi.c Modified: head/usr.sbin/bhyve/pci_virtio_scsi.c ============================================================================== --- head/usr.sbin/bhyve/pci_virtio_scsi.c Fri Jul 12 18:13:58 2019 (r349944) +++ head/usr.sbin/bhyve/pci_virtio_scsi.c Fri Jul 12 18:17:35 2019 (r349945) @@ -465,7 +465,7 @@ pci_vtscsi_request_handle(struct pci_vtscsi_queue *q, int data_niov_in, data_niov_out; void *ext_data_ptr = NULL; uint32_t ext_data_len = 0, ext_sg_entries = 0; - int err; + int err, nxferred; seek_iov(iov_in, niov_in, data_iov_in, &data_niov_in, VTSCSI_IN_HEADER_LEN(sc)); @@ -544,10 +544,11 @@ pci_vtscsi_request_handle(struct pci_vtscsi_queue *q, } buf_to_iov(cmd_wr, VTSCSI_OUT_HEADER_LEN(sc), iov_out, niov_out, 0); + nxferred = VTSCSI_OUT_HEADER_LEN(sc) + io->scsiio.ext_data_filled; free(cmd_rd); free(cmd_wr); ctl_scsi_free_io(io); - return (VTSCSI_OUT_HEADER_LEN(sc) + io->scsiio.ext_data_filled); + return (nxferred); } static void