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&os; &release.current; Release Notes The &os; Project $FreeBSD$ 2020 The &os; Documentation Project &tm-attrib.freebsd; &tm-attrib.ibm; &tm-attrib.ieee; &tm-attrib.intel; &tm-attrib.sparc; &tm-attrib.general; The release notes for &os; &release.current; contain a summary of the changes made to the &os; base system on the &release.branch; development line. This document lists applicable security advisories that were issued since the last release, as well as significant changes to the &os; kernel and userland. Some brief remarks on upgrading are also presented. Introduction This document contains the release notes for &os; &release.current;. It describes recently added, changed, or deleted features of &os;. It also provides some notes on upgrading from previous versions of &os;. The &release.type; distribution to which these release notes apply represents the latest point along the &release.branch; development branch since &release.branch; was created. Information regarding pre-built, binary &release.type; distributions along this branch can be found at &release.url;. The &release.type; distribution to which these release notes apply represents a point along the &release.branch; development branch between &release.prev; and the future &release.next;. Information regarding pre-built, binary &release.type; distributions along this branch can be found at &release.url;. This distribution of &os; &release.current; is a &release.type; distribution. It can be found at &release.url; or any of its mirrors. More information on obtaining this (or other) &release.type; distributions of &os; can be found in the Obtaining &os; appendix to the &os; Handbook. All users are encouraged to consult the release errata before installing &os;. The errata document is updated with late-breaking information discovered late in the release cycle or after the release. Typically, it contains information on known bugs, security advisories, and corrections to documentation. An up-to-date copy of the errata for &os; &release.current; can be found on the &os; Web site. This document describes the most user-visible new or changed features in &os; since &release.prev;. In general, changes described here are unique to the &release.branch; branch unless specifically marked as &merged; features. Typical release note items document recent security advisories issued after &release.prev;, new drivers or hardware support, new commands or options, major bug fixes, or contributed software upgrades. They may also list changes to major ports/packages or release engineering practices. Clearly the release notes cannot list every single change made to &os; between releases; this document focuses primarily on security advisories, user-visible changes, and major architectural improvements. Upgrading from Previous Releases of &os; Binary upgrades between RELEASE versions (and snapshots of the various security branches) are supported using the &man.freebsd-update.8; utility. The binary upgrade procedure will update unmodified userland utilities, as well as unmodified GENERIC kernels distributed as a part of an official &os; release. The &man.freebsd-update.8; utility requires that the host being upgraded have Internet connectivity. Source-based upgrades (those based on recompiling the &os; base system from source code) from previous versions are supported, according to the instructions in /usr/src/UPDATING. Upgrading &os; should only be attempted after backing up all data and configuration files. Security and Errata This section lists the various Security Advisories and Errata Notices since &release.prev;. Security Advisories Advisory Date Topic - FreeBSD-SA-18:15.bootpd - 19 December 2018 - Buffer overflow + No advisories. +   +   - - - FreeBSD-SA-19:01.syscall - 5 February 2019 - Kernel data register leak - - - - FreeBSD-SA-19:02.fd - 5 February 2019 - File description reference count - leak - - - - FreeBSD-SA-19:03.wpa - 14 May 2019 - Multiple vulnerabilities - - - - FreeBSD-SA-19:04.ntp - 14 May 2019 - Authenticated denial of service in - &man.ntpd.8; - - - - FreeBSD-SA-19:05.pf - 14 May 2019 - IPv6 fragment reassembly panic in - &man.pf.4; - - - - FreeBSD-SA-19:06.pf - 14 May 2019 - ICMP/ICMP6 packet filter bypass in - &man.pf.4; - - - - FreeBSD-SA-19:07.mds - 14 May 2019 - Microarchitectural Data - Sampling - - - - FreeBSD-SA-19:08.rack - 19 June 2019 - Resource exhaustion in non-default RACK TCP - stack - - - - FreeBSD-SA-19:09.iconv - 2 July 2019 - &man.iconv.3; buffer - overflow - - - - FreeBSD-SA-19:10.ufs - 2 July 2019 - Kernel stack disclosure - - - - FreeBSD-SA-19:11.cd_ioctl - 2 July 2019 - Privilege escalation in - &man.cd.4; - - - - FreeBSD-SA-19:12.telnet - 24 July 2019 - Multiple vulnerabilities - - - - FreeBSD-SA-19:13.pts - 24 July 2019 - Write-after-free - vulnerability - - - - FreeBSD-SA-19:15.mqueuefs - 24 July 2019 - Reference count overflow - - - - FreeBSD-SA-19:16.bhyve - 24 July 2019 - &man.xhci.4; out-of-bounds - read - - - - FreeBSD-SA-19:17.fd - 24 July 2019 - Reference count leak - - - - FreeBSD-SA-19:18.bzip2 - 6 August 2019 - Multiple vulnerabilities - - - - FreeBSD-SA-19:19.mldv2 - 6 August 2019 - Out-of-bounds memory access - - - - FreeBSD-SA-19:20.bsnmp - 6 August 2019 - Insufficient message length - validation - - - - FreeBSD-SA-19:21.bhyve - 6 August 2019 - Insufficient validation of guest-supplied - data - - - - FreeBSD-SA-19:22.mbuf - 20 August 2019 - IPv6 remove - denial-of-service - - - - FreeBSD-SA-19:23.midi - 20 August 2019 - Kernel memory disclosure - - - - FreeBSD-SA-19:24.mqueuefs - 20 August 2019 - Reference count overflow - Errata Notices Errata Date Topic - FreeBSD-EN-19:01.cc_cubic - 9 January 2019 - Connection stalls with CUBIC congestion - control + No notices. +   +   - - - FreeBSD-EN-19:02.tcp - 9 January 2019 - TCP connections may stall and eventually - fail in case of packet loss - - - - FreeBSD-EN-19:03.sqlite - 9 January 2019 - sqlite update - - - - FreeBSD-EN-19:04.tzdata - 9 January 2019 - Timezone database information - update - - - - FreeBSD-EN-19:06.dtrace - 5 February 2019 - DTrace incompatibility with SMAP-enabled - systems - - - - FreeBSD-EN-19:07.lle - 5 February 2019 - LLE table lookup code race - condition - - - - FreeBSD-EN-19:08.tzdata - 14 May 2019 - Timezone database information - update - - - - FreeBSD-EN-19:09.xinstall - 14 May 2019 - &man.install.1; broken with partially - matching relative paths - - - - FreeBSD-EN-19:10.scp - 14 May 2019 - Insufficient filename validation in - &man.scp.1; client - - - - FreeBSD-EN-19:11.net - 19 June 2019 - Incorrect locking in networking - stack - - - - FreeBSD-EN-19:12.tzdata - 2 July 2019 - Timezone database information - update - - - - FreeBSD-EN-19:13.mds - 24 July 2019 - System crash from Intel CPU vulnerability - mitigation - - - - FreeBSD-EN-19:14.epoch - 6 August 2019 - Incorrect locking - - - - FreeBSD-EN-19:15.libunwind - 6 August 2019 - Incorrect exception handling - - - - FreeBSD-EN-19:16.bhyve - 20 August 2019 - Instruction emulation - improvements - - - - FreeBSD-EN-19:17.ipfw - 20 August 2019 - "jail" keyword fix - Userland This section covers changes and additions to userland applications, contributed software, and system utilities. Userland Configuration Changes - The gcc - -Werror flag has been turned off by - default. +   Userland Application Changes - The &man.lockf.1; utility has been - updated to return EX_UNAVAILABLE if the - -n flag is used and the lock file does not - exist. - - The &man.ktrdump.8; utility has been - updated to include the -l flag which - enables "live" mode when specified. - - The &man.gzip.1; utility has been - updated to add -l support for &man.xz.1; - files. - - The &man.trim.8; utility has been added, - which deletes content for blocks on flash-based storage - devices that use wear-leveling algorithms. - - The &man.sh.1; utility has been updated - to include a new pipefail option, which - when set, changes the exit status of a pipeline to the last - non-zero exit status of any command in the pipeline. - - The &man.mlx5tool.8; utility has been - updated to implement firmware update capability for - ConnectX-4®, ConnectX-5®, and ConnectX-6®. - - The &man.posixshmcontrol.1; utility has - been added. - - The &man.swapon.8; utility has been - updated to invoke BIO_DELETE to trim - swap devices if either the -E flag is used - on the command line, or if the trimonce - option is included in &man.fstab.5;. - - The &man.nvmecontrol.8; utility has been - updated to add a new subcommand, resv, - which is used to handle NVMe - reservations. - - The - &man.camcontrol.8; utility has been updated to support block - descriptors when using the modepage - subcommand. - - The &man.freebsd-update.8; utility has - been updated to include two new commands, - updatesready and - showconfig. - - The &man.zfs.8; utility has been updated - to support the -v, -n, - and -P flags together with the - send subcommand for bookmarks. +   Contributed Software - BearSSL has - been imported to the base system. - - The &man.ntpd.8; suite of utilities have - been updated to version 4.2.8p13. - - The &man.tcpdump.1; utility has been - updated to disable &man.capsicum.4; support when the - -E flag is used. - - The &man.bsnmpd.1; utility has been - updated to include IPv6 transport - support. - - The &man.libarchive.3; library has - been updated to version 3.4.0. - - The clang, - llvm, - lld, - lldb, - compiler-rt utilities and - libc++ have been updated to version - 8.0.1. - - The - lld linker has been enabled by - default for &arch.i386;. - - The - bzip2recover utility has been - added. - - The &man.bzip2.1; utility has been - updated to version 1.0.8. - - Warnings have been added for - Kerberos GSS - algorithms deprecated in RFC8221 and - RFC8429. - - The &man.mandoc.1; utility has been - updated to the 2019-07-23 snapshot. - - The WPA utilities - have been updated to version 2.9. - - OpenSSL has - been updated to version 1.1.1d. - - The timezone database files have been - updated to version 2019c. +   Deprecated Applications - The &man.ctm.1; utility has been marked - as deprecated, and has been removed in &os; 13.0. - - The &man.timed.8; utility has been - marked as deprecated, and has been removed in - &os; 13.0. +   Runtime Libraries and API - The libomp library - has been added. +   Kernel This section covers changes to kernel configurations, system tuning, and system control parameters that are not otherwise categorized. General Kernel Changes - The kernel will now log the &man.jail.8; - ID when logging a process exit. The - &man.jail.8; ID 0 - represents processes that are not jailed. - - The pci_vendors - list has been updated to version 2019.01.29. +   Devices and Drivers This section covers changes and additions to devices and device drivers since &release.prev;. Device Drivers - The &man.ichwd.4; driver has been updated - to include support for TCO watchdog timers - in the Lewisburg PCH (C620) chipset. - - The &man.amdsmn.4; and &man.amdtemp.4; - drivers have been updated to support Ryzen™ 2 host - bridges. - - The &man.amdtemp.4; driver has been - updated to correct temperature reporting for the AMD® - 2990WX. - - The &man.rtwn.pci.4; driver has been - added for the RTL8188EE chipset. - - The &man.crypto.4; driver has been - updated to print warnings for deprecated algorithms. - - The &man.ntb.hw.amd.4; driver has been - added, providing support for the AMD® Non-Transparent - Bridge. - - The &man.nvme.4; driver has been updated - to support suspend/resume for PCI - attachment. - - The - &man.cdceem.4; driver has been added, supporting virtual - USB network cards provided by - iLO 5, found in new - HPE® Proliant™ servers. - - The - &man.fusefs.5; driver has been overhauled, implementing new - features and performance improvements. - - The &man.mpr.4; and &man.mps.4; drivers - have been updated with stability fixes. - - As result of converting &man.mps.4; to - use atomic_swap_64, it is now disabled on - 32-bit &arch.powerpc; and &arch.mips;. +   Storage This section covers changes and additions to file systems and other storage subsystems, both local and networked. General Storage - The &man.camcontrol.8; utility has been - updated to add ATA power mode - support. - - Deprecation warnings have been added for - weaker algorithms when creating &man.geli.8; providers. - - The &man.cam.4; subsystem has been - updated to improve AHCI enclosure - management and SES interoperation. +   Boot Loader Changes This section covers the boot loader, boot menu, and other boot-related changes. Boot Loader Changes - The &man.loader.8; has been update to - allow booting from ZFS datasets with the - large_dnode feature flag enabled. - - The &man.loader.8; has been updated to - support the com.delphix:removing - ZFS &man.zpool-features.7; flag. +   Networking This section describes changes that affect networking in &os;. General Network - The &man.ipfw.8; utility has been - updated to fix showing headers outside of "all" - when executing ipfw table list. - - Support for NAT64 - CLAT has been added, as defined in - RFC6877. - - The - net.inet.tcp.rexmit_initial &man.sysctl.8; - has been added, used for setting - RTO.Initial, used by - TCP. - - Support for - GRE-in-UDP encapsulation - has been added, as defined in - RFC8086. +   Ports Collection and Package Infrastructure This section covers changes to the &os; Ports Collection, package infrastructure, and package maintenance and installation tools. Packaging Changes - The &man.pkg.8; utility has been updated to version - 1.12.0. - - The GNOME desktop environment - has been updated to version 3.28. - - The KDE desktop environment - has been updated to version 5.16.5.19.08.1. +   General Notes Regarding Future &os; Releases Default <varname>CPUTYPE</varname> Change Starting with &os;-13.0, the default CPUTYPE for the &arch.i386; architecture will change from 486 to 686. This means that, by default, binaries produced will require a 686-class CPU, including but not limited to binaries provided by the &os; Release Engineering team. &os; 13.0 will continue to support older CPUs, however users needing this functionality will need to build their own releases for official support. As the primary use for i486 and i586 CPUs is generally in the embedded market, the general end-user impact is expected to be minimal, as new hardware with these CPU types has long faded, and much of the deployed base of such systems is nearing retirement age, statistically. There were several factors taken into account for this change. For example, i486 does not have 64-bit atomics, and while they can be emulated in the kernel, they cannot be emulated in the userland. Additionally, the 32-bit amd64 libraries have been i686 since their inception. As the majority of 32-bit testing is done by developers using the lib32 libraries on 64-bit hardware with the COMPAT_FREEBSD32 option in the kernel, this change ensures better coverage and user experience. This also aligns with what the majority of &linux; distributions have been doing for quite some time. This is expected to be the final bump of the default CPUTYPE in &arch.i386;. - This change does not affect the &os; 12.x - series of releases. + This change does not affect the &os; 12.x or + 11.x series of releases.