FreeBSD The Power to Serve

FreeBSD 12.0-RELEASE Errata

Abstract

This document lists errata items for FreeBSD "12.0-RELEASE", containing significant information discovered after the release or too late in the release cycle to be otherwise included in the release documentation. This information includes security advisories, as well as news relating to the software or documentation that could affect its operation or usability. An up-to-date version of this document should always be consulted before installing this version of FreeBSD.

This errata document for FreeBSD "12.0-RELEASE" will be maintained until the release of FreeBSD "13.0-RELEASE".

Introduction

This errata document contains "late-breaking news" about FreeBSD "12.0-RELEASE" Before installing this version, it is important to consult this document to learn about any post-release discoveries or problems that may already have been found and fixed.

Any version of this errata document actually distributed with the release (for example, on a CDROM distribution) will be out of date by definition, but other copies are kept updated on the Internet and should be consulted as the "current errata" for this release. These other copies of the errata are located at https://www.FreeBSD.org/releases/, plus any sites which keep up-to-date mirrors of this location.

Source and binary snapshots of FreeBSD "12-STABLE" also contain up-to-date copies of this document (as of the time of the snapshot).

For a list of all FreeBSD CERT security advisories, see https://www.FreeBSD.org/security/.

Security Advisories

Advisory Date Topic

FreeBSD-SA-18:15.bootpd

19 December 2018

Buffer overflow

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 ntpd(8)

FreeBSD-SA-19:05.pf

14 May 2019

IPv6 fragment reassembly panic in pf(3)

FreeBSD-SA-19:06.pf

14 May 2019

ICMP/ICMP6 packet filter bypass in pf(3)

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

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 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

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

FreeBSD-SA-19:25.mcepce

12 November 2019

Machine Check Exception on Page Size Change

FreeBSD-SA-19:26.mcu

12 November 2019

Intel CPU Microcode Update

FreeBSD-SA-20:01.libfetch

28 January 2020

fetch(3) buffer overflow

FreeBSD-SA-20:02.ipsec

28 January 2020

Missing anti-replay window check

FreeBSD-SA-20:03.thrmisc

28 January 2020

Kernel stack data disclosure

Errata Notices

Errata Date Topic

FreeBSD-EN-19:01.cc_cubic

9 January 2019

Connection stalls with CUBIC congestion control

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

install(1) broken with partially matching relative paths

FreeBSD-EN-19:10.scp

14 May 2019

Insufficient filename validation in 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

FreeBSD-EN-19:18.tzdata

23 October 2019

Timezone database information update

FreeBSD-EN-19:19.loader

12 November 2019

UEFI Loader Memory Fragmentation

FreeBSD-EN-20:01.ssp

28 January 2020

Imprecise orderring of canary initialization

FreeBSD-EN-20:02.nmount

28 January 2020

Invalid pointer dereference

Open Issues

  • [2018-12-11] Some Intel® J1900 systems may hang on boot in UEFI mode. An observed workaround is to set kern.vty=sc at the loader(8) prompt. To have the setting persist after reboot(8), add kern.vty=sc to loader(5).

    See PR 230172 for more information.

  • [2018-12-11] OpenSSL version 1.1.1 disables use of hardware cryptography accelerator cards provided by crypto(4) by default. Systems that have cryptography devices such as hifn(4), padlock(4), safe(4), and ubsec(4) currently will not take advantage of hardware cryptography offloading.

    It is currently unclear if an Errata Notice will be issued to re-enable use of crypto(4).

  • [2018-12-13] Due to the size of the base system of FreeBSD 12.0, the disc1.iso images for amd64 and i386 do not fit onto a 700 MB CD-ROM. As of FreeBSD 12.0-RELEASE, however, disc1.iso for these architectures can be written to a flash drive, or to a DVD.

    See PR 233989 for more information.

  • [2018-12-13] Some users have reported FreeBSD 12.0-RELEASE boot messages do not report CPUs other than CPU0. This is expected behavior introduced in r333334, and results in boot-time reduction.

  • [2018-12-13] The FreeBSD 12.0 release notes mention use of graphics/drm-stable-kmod and graphics/drm-legacy-kmod for modern graphics cards. These ports have been changed to a "meta port" in the Ports Collection, and will be renamed in the 2019Q1 quarterly branch, after which graphics/drm-kmod should be used instead.

Late-Breaking News

No news.