FreeBSD 10.3-STABLE Release Notes

The FreeBSD Project

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Last modified on 2016-03-07 10:56:38Z by hrs.

The release notes for FreeBSD 10.3-STABLE contain a summary of the changes made to the FreeBSD base system on the 10.3-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.

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Table of Contents
1. Introduction
2. Upgrading from Previous Releases of FreeBSD
3. Security and Errata
3.1. Security Advisories
3.2. Errata Notices
4. Userland
4.1. Userland Configuration Changes
4.2. Userland Application Changes
4.3. Contributed Software
4.4. Installation and Configuration Tools
4.5. /etc/rc.d Scripts
4.6. /etc/periodic Scripts
4.7. Runtime Libraries and API
4.8. ABI Compatibility
5. Kernel
5.1. Kernel Bug Fixes
5.2. Kernel Configuration
5.3. System Tuning and Controls
6. Devices and Drivers
6.1. Device Drivers
6.2. Storage Drivers
6.3. Network Drivers
7. Hardware Support
7.1. Hardware Support
7.2. Virtualization Support
7.3. ARM Support
8. Storage
8.1. General Storage
8.2. Networked Storage
8.3. ZFS
8.4. geom(4)
9. Boot Loader Changes
9.1. Boot Loader Changes
9.2. Boot Menu Changes
10. Networking
10.1. Network Protocols
11. Ports Collection and Package Infrastructure
11.1. Infrastructure Changes
11.2. Packaging Changes
12. Documentation
12.1. Documentation Source Changes
12.2. Documentation Toolchain Changes
13. Release Engineering and Integration
13.1. Integration Changes

1. Introduction

This document contains the release notes for FreeBSD 10.3-STABLE. It describes recently added, changed, or deleted features of FreeBSD. It also provides some notes on upgrading from previous versions of FreeBSD.

The snapshot distribution to which these release notes apply represents a point along the 10.3-STABLE development branch between 10.3-RELEASE and the future 10.3-RELEASE. Information regarding pre-built, binary snapshot distributions along this branch can be found at

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 10.3-STABLE can be found on the FreeBSD Web site.

This document describes the most user-visible new or changed features in FreeBSD since 10.3-RELEASE.

Typical release note items document recent security advisories issued after 10.3-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.

2. 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) utility. The binary upgrade procedure will update unmodified userland utilities, as well as unmodified GENERIC kernel distributed as a part of an official FreeBSD release. The 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.


Upgrading FreeBSD should only be attempted after backing up all data and configuration files.

3. Security and Errata

This section lists the various Security Advisories and Errata Notices since 10.3-RELEASE.

3.1. Security Advisories

FreeBSD-SA-16:09.ntp29 April 2016

Multiple ntp vulnerabilities.

FreeBSD-SA-16:17.openssl29 April 2016

Multiple OpenSSL vulnerabilities.

FreeBSD-SA-16:18.atkbd17 May 2016

Keyboard driver buffer overflow

FreeBSD-SA-16:19.sendmsg17 May 2016

Incorrect argument handling in sendmsg(2)

FreeBSD-SA-16:20.linux31 May 2016

Kernel stack disclosure in Linux compatibility layer

FreeBSD-SA-16:21.43bsd31 May 2016

Kernel stack disclosure in 4.3BSD compatibility layer

FreeBSD-SA-16:22.libarchive31 May 2016

Absolute path traversal vulnerability

FreeBSD-SA-16:23.libarchive31 May 2016

Absolute path traversal vulnerability

FreeBSD-SA-16:24.ntp3 June 2016

Multiple ntp vulnerabilties

FreeBSD-SA-16:25.bspatch25 July 2016

heap overflow vulnerability

3.2. Errata Notices

FreeBSD-EN-16:06.libc4 May 2016

Performance regression in libc hash(3)

FreeBSD-EN-16:07.ipi4 May 2016

Excessive latency in x86 IPI delivery

FreeBSD-EN-16:08.zfs4 May 2016

Memory leak in ZFS

FreeBSD-EN-16:09.freebsd-update25 July 2016

Fix freebsd-update(8) support of FreeBSD 11.0-RELEASE

FreeBSD-EN-16:10.dhclient11 August 2016

Better handle unknown options received from aDHCP server

FreeBSD-EN-16:11.vmbus11 August 2016

Avoid using spin locks for channel message locks

FreeBSD-EN-16:12.hv_storvsc11 August 2016

Enable INQUIRY result check only on Windows 10 host systems

FreeBSD-EN-16:13.vmbus11 August 2016

Register time counter early enough for TSC freq calibration

FreeBSD-EN-16:14.hv_storvsc11 August 2016

Disable incorrect callout in hv_storvsc(4)

FreeBSD-EN-16:15.vmbus11 August 2016

Better handle the GPADL setup failure in Hyper-V

FreeBSD-EN-16:16.hv_storvsc11 August 2016

Fix SCSI INQUIRY checks and error handling

4. Userland

This section covers changes and additions to userland applications, contributed software, and system utilities.

4.1. Userland Configuration Changes


4.2. Userland Application Changes


4.3. Contributed Software


4.4. Installation and Configuration Tools


4.5. /etc/rc.d Scripts


4.6. /etc/periodic Scripts


4.7. Runtime Libraries and API


4.8. ABI Compatibility


5. Kernel

This section covers changes to kernel configurations, system tuning, and system control parameters that are not otherwise categorized.

5.1. Kernel Bug Fixes

5.2. Kernel Configuration


5.3. System Tuning and Controls

6. Devices and Drivers

This section covers changes and additions to devices and device drivers since 10.3-RELEASE.

6.1. Device Drivers


6.2. Storage Drivers

6.3. Network Drivers


7. 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.

7.1. Hardware Support


7.2. Virtualization Support

7.3. ARM Support


8. Storage

This section covers changes and additions to file systems and other storage subsystems, both local and networked.

8.1. General Storage


8.2. Networked Storage


8.3. ZFS

8.4. geom(4)


9. Boot Loader Changes

This section covers the boot loader, boot menu, and other boot-related changes.

9.1. Boot Loader Changes


9.2. Boot Menu Changes


10. Networking

This section describes changes that affect networking in FreeBSD.

10.1. Network Protocols


11. Ports Collection and Package Infrastructure

This section covers changes to the FreeBSD Ports Collection, package infrastructure, and package maintenance and installation tools.

11.1. Infrastructure Changes


11.2. Packaging Changes


12. Documentation

This section covers changes to the FreeBSD Documentation Project sources and toolchain.

12.1. Documentation Source Changes


12.2. Documentation Toolchain Changes


13. Release Engineering and Integration

This section convers changes that are specific to the FreeBSD Release Engineering processes.

13.1. Integration Changes


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