FreeBSD 11.4-RELEASE Release Notes
Abstract
The release notes for FreeBSD 11.4-RELEASE contain a summary of the changes made to the FreeBSD base system on the 11.4-STABLE development line. This document lists applicable security advisories that were issued since the last release, as well as significant changes to the FreeBSD kernel and userland. Some brief remarks on upgrading are also presented.
Table of Contents
Introduction
This document contains the release notes for FreeBSD 11.4-RELEASE. It describes recently added, changed, or deleted features of FreeBSD. It also provides some notes on upgrading from previous versions of FreeBSD.
This distribution of FreeBSD 11.4-RELEASE is a release
distribution. It can be found at https://www.FreeBSD.org/releases/
or any of its
mirrors. More information on obtaining this (or other) release
distributions of FreeBSD can be found in the Obtaining
FreeBSD' appendix to the FreeBSD
Handbook.
All users are encouraged to consult the release errata before installing FreeBSD. 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 FreeBSD 11.4-RELEASE can be found on the FreeBSD Web site.
This document describes the most user-visible new or changed features in FreeBSD since 11.2-RELEASE. In general, changes described here are unique to the 11.4-STABLE branch unless specifically marked as MERGED features.
Typical release note items document recent security advisories issued after 11.2-RELEASE, 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 FreeBSD between releases; this document focuses primarily on security advisories, user-visible changes, and major architectural improvements.
Upgrading from Previous Releases of FreeBSD
[amd64,i386] Binary upgrades between RELEASE versions (and snapshots of the various security branches) are supported using the freebsd-update(8&manpath=freebsd-release-ports[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 FreeBSD release. The freebsd-update(8&manpath=freebsd-release-ports[freebsd-update(8)) utility requires that the host being upgraded have Internet connectivity.
Source-based upgrades (those based on recompiling the FreeBSD
base system from source code) from previous versions are supported,
according to the instructions in
/usr/src/UPDATING
.
Important
|
Upgrading FreeBSD 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 11.2-RELEASE.
Security Advisories
Advisory | Date | Topic |
---|---|---|
24 July 2019 |
Multiple vulnerabilities |
|
24 July 2019 |
Write-after-free vulnerability |
|
24 July 2019 |
Kernel memory disclosure |
|
24 July 2019 |
Reference count overflow |
|
24 July 2019 |
xhci(4) out-of-bounds read |
|
24 July 2019 |
Reference count leak |
|
6 August 2019 |
Multiple vulnerabilities |
|
6 August 2019 |
Out-of-bounds memory access |
|
6 August 2019 |
Insufficient message length validation |
|
6 August 2019 |
Insufficient validation of guest-supplied data |
|
20 August 2019 |
IPv6 remove denial-of-service |
|
20 August 2019 |
Kernel memory disclosure |
|
20 August 2019 |
Reference count overflow |
|
12 November 2019 |
Machine Check Exception on Page Size Change |
|
12 November 2019 |
Intel CPU Microcode Update |
|
28 January 2020 |
fetch(3) buffer overflow |
|
28 January 2020 |
Kernel stack data disclosure |
|
18 March 2020 |
TCP IPv6 SYN cache kernel information disclosure |
|
18 March 2020 |
Insufficient ioctl(2) privilege checking |
|
18 March 2020 |
Incorrect user-controlled pointer use |
|
18 March 2020 |
Kernel memory disclosure with nested jails |
|
18 March 2020 |
Multiple denial of service |
|
21 April 2020 |
Invalid mbuf(9) handling |
|
12 May 2020 |
Insufficient packet length validation |
|
12 May 2020 |
Memory disclosure vulnerability |
|
9 June 2020 |
HID descriptor parsing error |
Errata Notices
Errata | Date | Topic |
---|---|---|
24 July 2019 |
System crash from Intel CPU vulnerability mitigation |
|
6 August 2019 |
Incorrect exception handling |
|
20 August 2019 |
Instruction emulation improvements |
|
20 August 2019 |
"jail" keyword fix |
|
23 October 2019 |
Timezone database information update |
|
28 January 2020 |
Imprecise orderring of canary initialization |
|
28 January 2020 |
Invalid pointer dereference |
|
18 March 2020 |
Missing pfctl(8) tunable |
|
18 March 2020 |
Incorrect checksum calculations |
|
21 April 2020 |
Regression with certain NFS servers |
Userland
This section covers changes and additions to userland applications, contributed software, and system utilities.
Userland Configuration Changes
The netatalk protocol has been removed from services(5). r358903
Userland Application Changes
The camcontrol(8) utility has been updated to include support for Accessible Max Address Configuration (AMA). r350801(Sponsored by iXsystems)
The
camcontrol(8) utility has been updated to support block
descriptors with the modepage
subcommand.
r351582
The
yp(8) subsystem has been updated to increase the value of
YPMAXRECORD
from 1M to 16M for compatibility with
Linux®.
r351694(Sponsored by Mellanox Technologies)
The
usbconfig(8) utility has been updated to include the
detach_kernel_driver
command.
r351843
The jot(1) utility has been updated to allow an endless stream of random data within the specified bounds. r351873
The
freebsd-update(8) utility has been updated to include two new
commands, updatesready
and showconfig
.
r352758
The
cron(8) utility has been updated to support two new flags in
crontab(5), -n
and -q
, which suppress
mail on successful runs and suppress logging of command execution,
respectively.
r353134
The
usbconfig(8) utility has been updated to include the
dump_stats
command.
r356401
The fsck_ffs(8) and newfs(8) utilities has been updated to fix recovery information with sector sizes up to 64k. r356905
The certctl(8) utility has been added. r357082
The
env(1) utility has been updated to include the -L
and -U
options, which are used to set the environment
of the specified user from login.conf
and
~/.login_conf
, respectively.
r357791
The syslogd(8) utility has been updated to add property-based filters. r359740
Contributed Software
The WPA utilities have been updated to version 2.9. r351611
The libbsdxml(3) library has been updated to version 2.2.9. r355604
OpenSSL has been update to version 1.0.2u. r356290
The tcpdump(1) utility has been updated to version 4.9.3. r356341
The unbound(8) utility has been updated to version 1.9.6. r356345
The archive(3) library has been updated to version 3.4.2. r358088
The timezone database files have been updated to version 2020a. r360362
The clang, llvm, lld, lldb, libunwind, openmp, compiler-rt utilities and libc++ have been updated to version 10.0.0. r360822
A fix to correctly link DTrace-enabled ports with lld has been added. r361217
Devices and Drivers
This section covers changes and additions to devices and device drivers since 11.3-RELEASE.
Device Drivers
The Kerberos GSS API has been updated to emit deprecation warnings for algorithms marked as "SHOULD NOT" be used in RFCs 6649 and 8429. r351243
Storage Drivers
The aacraid(4) driver has been updated to version 3.2.10. r354965
Support for JMicron® JMB582 and JMB585 AHCI controllers has been added. r359971
Network Drivers
Hardware Support
This section covers general hardware support for physical machines, hypervisors, and virtualization environments, as well as hardware changes and updates that do not otherwise fit in other sections of this document.
Hardware Support
Support for Intel® Cannon Lake PCH has been added to snd_hda(4). r359114
Storage
This section covers changes and additions to file systems and other storage subsystems, both local and networked.
ZFS
Networking
This section describes changes that affect networking in FreeBSD.
Network Protocols
The libalias(3) library and ipfw(4) packet filter have been updated to add support for RFC 6598/Carrier Grade NAT subnets. r359695
Ports Collection and Package Infrastructure
This section covers changes to the FreeBSD Ports Collection, package infrastructure, and package maintenance and installation tools.
Packaging Changes
The pkg(8) utility has been updated to version 1.13.2.
The GNOME desktop environment has been updated to version 3.28.
The KDE desktop environment has been updated to version 5.8.4.1.19.12.3.
Last modified on: June 19, 2021 by Danilo G. Baio