FreeBSD 12.0-RELEASE Errata

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Last modified on 2018-12-13 19:55:47 by gjb.

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.

Table of Contents
1. Introduction
2. Security Advisories
3. Errata Notices
4. Open Issues
5. Late-Breaking News

1. 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version of this errata document actually distributed with the release (for example, on a CDROM distribution) will be out of date by definition, but other copies are kept updated on the Internet and should be consulted as the current errata for this release.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, 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

2. Security Advisories

FreeBSD-SA-18:15.bootpd19 December 2018

Buffer overflow

FreeBSD-SA-19:01.syscall5 February 2019

Kernel data register leak

FreeBSD-SA-19:02.fd5 February 2019

File description reference count leak

FreeBSD-SA-19:03.wpa14 May 2019

Multiple vulnerabilities

FreeBSD-SA-19:04.ntp14 May 2019

Authenticated denial of service in ntpd(8)

FreeBSD-SA-19:05.pf14 May 2019

IPv6 fragment reassembly panic in pf(4)

FreeBSD-SA-19:06.pf14 May 2019

ICMP/ICMP6 packet filter bypass in pf(4)

FreeBSD-SA-19:07.mds14 May 2019

Microarchitectural Data Sampling

FreeBSD-SA-19:08.rack19 June 2019

Resource exhaustion in non-default RACK TCP stack

FreeBSD-SA-19:09.iconv2 July 2019

iconv(3) buffer overflow

FreeBSD-SA-19:10.ufs2 July 2019

Kernel stack disclosure

FreeBSD-SA-19:11.cd_ioctl2 July 2019

Privilege escalation in cd(4)

3. Errata Notices

FreeBSD-EN-19:01.cc_cubic9 January 2019

Connection stalls with CUBIC congestion control

FreeBSD-EN-19:02.tcp9 January 2019

TCP connections may stall and eventually fail in case of packet loss

FreeBSD-EN-19:03.sqlite9 January 2019

sqlite update

FreeBSD-EN-19:04.tzdata9 January 2019

Timezone database information update

FreeBSD-EN-19:06.dtrace5 February 2019

DTrace incompatibility with SMAP-enabled systems

FreeBSD-EN-19:07.lle5 February 2019

LLE table lookup code race condition

FreeBSD-EN-19:08.tzdata14 May 2019

Timezone database information update

FreeBSD-EN-19:09.xinstall14 May 2019

install(1) broken with partially matching relative paths

FreeBSD-EN-19:10.scp14 May 2019

Insufficient filename validation in scp(1) client

FreeBSD-EN-19:11.net19 June 2019

Incorrect locking in networking stack

FreeBSD-EN-19:12.tzdata2 July 2019

Timezone database information update

4. 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.conf(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.

5. Late-Breaking News

No news.