---
title: Docker Engine 18.09 release notes
toc_min: 1
toc_max: 2
---

> **Note:**
>
> With this release, the daemon, client and container runtime are now all shipped
> in separate packages. When updating, you need to update all packages at the same
> time to get the latest patch releases for each. For example, on Ubuntu:
> 
> ```console
> $ sudo apt-get install docker-ce docker-ce-cli containerd.io
> ```
> 
> See the [installation instructions](../install/index.md) for the corresponding
> Linux distro for details.

## 18.09.9
2019-09-03

### Client

* Fix Windows absolute path detection on non-Windows. [docker/cli#1990](https://github.com/docker/cli/pull/1990)
* Fix Docker refusing to load key from delegation.key on Windows. [docker/cli#1968](https://github.com/docker/cli/pull/1968)
* Completion scripts updates for bash and zsh.

### Logging

* Fix for reading journald logs. [moby/moby#37819](https://github.com/moby/moby/pull/37819) [moby/moby#38859](https://github.com/moby/moby/pull/38859)

### Networking

* Prevent panic on network attached to a container with disabled networking. [moby/moby#39589](https://github.com/moby/moby/pull/39589)
* Fix service port for an application becomes unavailable randomly. [docker/libnetwork#2069](https://github.com/docker/libnetwork/pull/2069)
* Fix cleaning up `--config-only` networks `--config-from` networkshave ungracefully exited. [docker/libnetwork#2373](https://github.com/docker/libnetwork/pull/2373)

### Runtime

* Update to Go 1.11.13.
* Fix a potential engine panic when using XFS disk quota for containers. [moby/moby#39644](https://github.com/moby/moby/pull/39644)

### Swarm

* Fix "grpc: received message larger than max" errors. [moby/moby#39306](https://github.com/moby/moby/pull/39306)
* Fix an issue where nodes several tasks could not be removed. [docker/swarmkit#2867](https://github.com/docker/swarmkit/pull/2867)

## 18.09.8
2019-07-17

### Runtime

* Masked the secrets updated to the log files when running Docker Engine in debug mode. [CVE-2019-13509](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-13509): If a Docker engine is running in debug mode, and `docker stack deploy` is used to redeploy a stack which includes non-external secrets, the logs will contain the secret.


### Client

* Fixed rollback config type interpolation for `parallelism` and `max_failure_ratio` fields.

### Known Issue

* There are important changes to the upgrade process that, if not correctly followed, can have an impact on the availability of applications running on the Swarm during upgrades. These constraints impact any upgrades coming from any version before 18.09 to version 18.09 or later.

## 18.09.7
2019-06-27

### Builder

* Fixed a panic error when building dockerfiles that contain only comments. [moby/moby#38487](https://github.com/moby/moby/pull/38487)
* Added a workaround for GCR authentication issue. [moby/moby#38246](https://github.com/moby/moby/pull/38246)
* Builder-next: Fixed a bug in the GCR token cache implementation workaround. [moby/moby#39183](https://github.com/moby/moby/pull/39183)

### Networking
*  Fixed an error where `--network-rm` would fail to remove a network. [moby/moby#39174](https://github.com/moby/moby/pull/39174)

### Runtime

* Added performance optimizations in aufs and layer store that helps in massively parallel container creation and removal. [moby/moby#39107](https://github.com/moby/moby/pull/39107), [moby/moby#39135](https://github.com/moby/moby/pull/39135)
* Updated containerd to version 1.2.6. [moby/moby#39016](https://github.com/moby/moby/pull/39016)
* Fixed [CVE-2018-15664](https://nvd.nist.gov/vuln/detail/CVE-2018-15664) symlink-exchange attack with directory traversal. [moby/moby#39357](https://github.com/moby/moby/pull/39357)
* Windows: fixed support for `docker service create --limit-cpu`. [moby/moby#39190](https://github.com/moby/moby/pull/39190)
* daemon: fixed a mirrors validation issue.  [moby/moby#38991](https://github.com/moby/moby/pull/38991)
* Docker no longer supports sorting UID and GID ranges in ID maps. [moby/moby#39288](https://github.com/moby/moby/pull/39288)

### Logging

* Added a fix that now allows large log lines for logger plugins. [moby/moby#39038](https://github.com/moby/moby/pull/39038)

### Known Issue
* There are  important changes to the upgrade process that, if not correctly followed, can have an impact on the availability of applications running on the Swarm during upgrades. These constraints impact any upgrades coming from any version before 18.09 to version 18.09 or later.

## 18.09.6
2019-05-06

### Builder
* Fixed `COPY` and `ADD` with multiple `<src>` to not invalidate cache if `DOCKER_BUILDKIT=1`.[moby/moby#38964](https://github.com/moby/moby/issues/38964)

### Networking
* Cleaned up the cluster provider when the agent is closed. [docker/libnetwork#2354](https://github.com/docker/libnetwork/pull/2354)
* Windows: Now selects a random host port if the user does not specify a host port. [docker/libnetwork#2369](https://github.com/docker/libnetwork/pull/2369)

### Known Issues
* There are  important changes to the upgrade process that, if not correctly followed, can have an impact on the availability of applications running on the Swarm during upgrades. These constraints impact any upgrades coming from any version before 18.09 to version 18.09 or later.

## 18.09.5

2019-04-11

### Builder

* Fixed `DOCKER_BUILDKIT=1 docker build --squash ..` [docker/engine#176](https://github.com/docker/engine/pull/176)

### Client

* Fixed tty initial size error. [docker/cli#1775](https://github.com/docker/cli/pull/1775)
* Fixed dial-stdio goroutine leakage. [docker/cli#1795](https://github.com/docker/cli/pull/1795)
* Fixed the stack informer's selector used to track deployment. [docker/cli#1794](https://github.com/docker/cli/pull/1794)

### Networking

* Fixed `network=host` using wrong `resolv.conf` with `systemd-resolved`. [docker/engine#180](https://github.com/docker/engine/pull/180)
* Fixed Windows ARP entries getting corrupted randomly under load. [docker/engine#192](https://github.com/docker/engine/pull/192)

### Runtime
* Now showing stopped containers with restart policy as `Restarting`. [docker/engine#181](https://github.com/docker/engine/pull/181)
* Now using original process spec for execs. [docker/engine#178](https://github.com/docker/engine/pull/178)

### Swarm Mode

* Fixed leaking task resources when nodes are deleted. [docker/engine#185](https://github.com/docker/engine/pull/185)

### Known Issues

* There are  important changes to the upgrade process that, if not correctly followed, can have an impact on the availability of applications running on the Swarm during upgrades. These constraints impact any upgrades coming from any version before 18.09 to version 18.09 or later.

## 18.09.4

 2019-03-28

### Builder

* Fixed [CVE-2019-13139](https://nvd.nist.gov/vuln/detail/CVE-2019-13139) by adding validation for `git ref` to avoid misinterpretation as a flag. [moby/moby#38944](https://github.com/moby/moby/pull/38944)

### Runtime

* Fixed `docker cp` error for filenames greater than 100 characters. [moby/moby#38634](https://github.com/moby/moby/pull/38634)
* Fixed `layer/layer_store` to ensure `NewInputTarStream` resources are released. [moby/moby#38413](https://github.com/moby/moby/pull/38413)
* Increased GRPC limit for `GetConfigs`. [moby/moby#38800](https://github.com/moby/moby/pull/38800)
* Updated `containerd` 1.2.5. [docker/engine#173](https://github.com/docker/engine/pull/173)

### Swarm Mode
* Fixed nil pointer exception when joining node to swarm. [moby/moby#38618](https://github.com/moby/moby/issues/38618)
* Fixed issue for swarm nodes not being able to join as masters if http proxy is set. [moby/moby#36951]

### Known Issues
* There are important changes to the upgrade process that, if not correctly followed, can have impact on the availability of applications running on the Swarm during upgrades. These constraints impact any upgrades coming from any version before 18.09 to version 18.09 or later.

## 18.09.3

2019-02-28

### Networking fixes
* Windows: now avoids regeneration of network IDs to prevent broken references to networks. [docker/engine#149](https://github.com/docker/engine/pull/149)
* Windows: Fixed an issue to address `- restart always` flag on standalone containers not working when specifying a network. (docker/escalation#1037)
* Fixed an issue to address the IPAM state from networkdb if the manager is not attached to the overlay network. (docker/escalation#1049)

### Runtime fixes and updates

* Updated to Go version 1.10.8.
* Modified names in the container name generator. [docker/engine#159](https://github.com/docker/engine/pull/159)
* When copying an existing folder, xattr set errors when the target filesystem doesn't support xattr are now ignored. [docker/engine#135](https://github.com/docker/engine/pull/135)
* Graphdriver: fixed "device" mode not being detected if "character-device" bit is set. [docker/engine#160](https://github.com/docker/engine/pull/160)
* Fixed nil pointer derefence on failure to connect to containerd. [docker/engine#162](https://github.com/docker/engine/pull/162)
* Deleted stale containerd object on start failure. [docker/engine#154](https://github.com/docker/engine/pull/154)

### Known Issues
* There are important changes to the upgrade process that, if not correctly followed, can have impact on the availability of applications running on the Swarm during upgrades. These constraints impact any upgrades coming from any version before 18.09 to version 18.09 or greater.

## 18.09.2

2019-02-11

### Security fixes
* Update `runc` to address a critical vulnerability that allows specially-crafted containers to gain administrative privileges on the host. [CVE-2019-5736](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5736)
* Ubuntu 14.04 customers using a 3.13 kernel will need to upgrade to a supported Ubuntu 4.x kernel

For additional information, [refer to the Docker blog post](https://blog.docker.com/2019/02/docker-security-update-cve-2018-5736-and-container-security-best-practices/).

### Known Issues
* There are important changes to the upgrade process that, if not correctly followed, can have impact on the availability of applications running on the Swarm during upgrades. These constraints impact any upgrades coming from any version before 18.09 to version 18.09 or greater.

## 18.09.1

2019-01-09

#### Important notes about this release

In Docker versions prior to 18.09, containerd was managed by the Docker engine daemon. In Docker Engine 18.09, containerd is managed by systemd. Since containerd is managed by systemd, any custom configuration to the `docker.service` systemd configuration which changes mount settings (for example, `MountFlags=slave`) breaks interactions between the Docker Engine daemon and containerd, and you will not be able to start containers.

Run the following command to get the current value of the `MountFlags` property for the `docker.service`:

```console
$ sudo systemctl show --property=MountFlags docker.service
MountFlags=
```

Update your configuration if this command prints a non-empty value for `MountFlags`, and restart the docker service.

### Security fixes
* Upgraded Go language to 1.10.6 to resolve [CVE-2018-16873](https://nvd.nist.gov/vuln/detail/CVE-2018-16873), [CVE-2018-16874](https://nvd.nist.gov/vuln/detail/CVE-2018-16874), and [CVE-2018-16875](https://nvd.nist.gov/vuln/detail/CVE-2018-16875).
* Fixed authz plugin for 0-length content and path validation.
* Added `/proc/asound` to masked paths [docker/engine#126](https://github.com/docker/engine/pull/126)

### Improvements
* Updated to BuildKit 0.3.3 [docker/engine#122](https://github.com/docker/engine/pull/122)
* Updated to containerd 1.2.2 [docker/engine#144](https://github.com/docker/engine/pull/144)
* Provided additional warnings for use of deprecated legacy overlay and devicemapper storage drivers [docker/engine#85](https://github.com/docker/engine/pull/85)
* prune: perform image pruning before build cache pruning [docker/cli#1532](https://github.com/docker/cli/pull/1532)
* Added bash completion for experimental CLI commands (manifest) [docker/cli#1542](https://github.com/docker/cli/pull/1542)
* Windows: allow process isolation on Windows 10 [docker/engine#81](https://github.com/docker/engine/pull/81)

### Fixes
* Disable kmem accounting in runc on RHEL/CentOS (docker/escalation#614, docker/escalation#692) [docker/engine#121](https://github.com/docker/engine/pull/121)
* Fixed inefficient networking configuration [docker/engine#123](https://github.com/docker/engine/pull/123)
* Fixed docker system prune doesn't accept until filter [docker/engine#122](https://github.com/docker/engine/pull/122)
* Avoid unset credentials in `containerd` [docker/engine#122](https://github.com/docker/engine/pull/122)
* Fixed iptables compatibility on Debian [docker/engine#107](https://github.com/docker/engine/pull/107)
* Fixed setting default schema to tcp for docker host [docker/cli#1454](https://github.com/docker/cli/pull/1454)
* Fixed bash completion for `service update --force`  [docker/cli#1526](https://github.com/docker/cli/pull/1526)
* Windows: DetachVhd attempt in cleanup [docker/engine#113](https://github.com/docker/engine/pull/113)
* API: properly handle invalid JSON to return a 400 status [docker/engine#110](https://github.com/docker/engine/pull/110)
* API: ignore default address-pools on API < 1.39 [docker/engine#118](https://github.com/docker/engine/pull/118)
* API: add missing default address pool fields to swagger [docker/engine#119](https://github.com/docker/engine/pull/119)
* awslogs: account for UTF-8 normalization in limits [docker/engine#112](https://github.com/docker/engine/pull/112)
* Prohibit reading more than 1MB in HTTP error responses [docker/engine#114](https://github.com/docker/engine/pull/114)
* apparmor: allow receiving of signals from `docker kill` [docker/engine#116](https://github.com/docker/engine/pull/116)
* overlay2: use index=off if possible (fix EBUSY on mount) [docker/engine#84](https://github.com/docker/engine/pull/84)

### Packaging
* Add docker.socket requirement for docker.service. [docker/docker-ce-packaging#276](https://github.com/docker/docker-ce-packaging/pull/276)
* Add socket activation for RHEL-based distributions. [docker/docker-ce-packaging#274](https://github.com/docker/docker-ce-packaging/pull/274)
* Add libseccomp requirement for RPM packages. [docker/docker-ce-packaging#266](https://github.com/docker/docker-ce-packaging/pull/266)

### Known Issues
* When upgrading from 18.09.0 to 18.09.1, `containerd` is not upgraded to the correct version on Ubuntu.
* There are important changes to the upgrade process that, if not correctly followed, can have impact on the availability of applications running on the Swarm during upgrades. These constraints impact any upgrades coming from any version before 18.09 to version 18.09 or greater.

## 18.09.0

2018-11-08

### Important notes about this release

In Docker versions prior to 18.09, containerd was managed by the Docker engine daemon. In Docker Engine 18.09, containerd is managed by systemd. Since containerd is managed by systemd, any custom configuration to the `docker.service` systemd
configuration which changes mount settings (for example, `MountFlags=slave`) breaks interactions between the Docker Engine daemon and containerd, and you will not be able to start containers.

Run the following command to get the current value of the `MountFlags` property for the `docker.service`:

```console
$ sudo systemctl show --property=MountFlags docker.service
MountFlags=
```

Update your configuration if this command prints a non-empty value for `MountFlags`, and restart the docker service.


### New features

* Updated API version to 1.39 [moby/moby#37640](https://github.com/moby/moby/pull/37640)
* Added support for remote connections using SSH [docker/cli#1014](https://github.com/docker/cli/pull/1014)
* Builder: added prune options to the API [moby/moby#37651](https://github.com/moby/moby/pull/37651)
* Added "Warnings" to `/info` endpoint, and move detection to the daemon [moby/moby#37502](https://github.com/moby/moby/pull/37502)
* Allows BuildKit builds to run without experimental mode enabled. Buildkit can now be configured with an option in daemon.json [moby/moby#37593](https://github.com/moby/moby/pull/37593) [moby/moby#37686](https://github.com/moby/moby/pull/37686) [moby/moby#37692](https://github.com/moby/moby/pull/37692) [docker/cli#1303](https://github.com/docker/cli/pull/1303)  [docker/cli#1275](https://github.com/docker/cli/pull/1275)
* Added support for build-time secrets using a `--secret` flag when using BuildKit [docker/cli#1288](https://github.com/docker/cli/pull/1288)
* Added SSH agent socket forwarder (`docker build --ssh $SSHMOUNTID=$SSH_AUTH_SOCK`) when using BuildKit [docker/cli#1438](https://github.com/docker/cli/pull/1438) / [docker/cli#1419](https://github.com/docker/cli/pull/1419)
* Added `--chown` flag support for `ADD` and `COPY` commands on Windows [moby/moby#35521](https://github.com/moby/moby/pull/35521)
* Added `builder prune` subcommand to prune BuildKit build cache [docker/cli#1295](https://github.com/docker/cli/pull/1295) [docker/cli#1334](https://github.com/docker/cli/pull/1334)
* BuildKit: Adds configurable garbage collection policy for the BuildKit build cache [docker/engine#59](https://github.com/docker/engine/pull/59) / [moby/moby#37846](https://github.com/moby/moby/pull/37846)
* BuildKit: Adds support for `docker build --pull ...` when using BuildKit [moby/moby#37613](https://github.com/moby/moby/pull/37613)
* BuildKit: Adds support or "registry-mirrors" and "insecure-registries" when using BuildKit [docker/engine#59](https://github.com/docker/engine/pull/59) / [moby/moby#37852](https://github.com/moby/moby/pull/37852)
* BuildKit: Enables net modes and bridge. [moby/moby#37620](https://github.com/moby/moby/pull/37620)
* Added `docker engine` subcommand to manage the lifecycle of a Docker Engine running as a privileged container on top of containerd, and to allow upgrades to Docker Engine Enterprise [docker/cli#1260](https://github.com/docker/cli/pull/1260)
* Exposed product license in `docker info` output [docker/cli#1313](https://github.com/docker/cli/pull/1313)
* Showed warnings produced by daemon in `docker info` output [docker/cli#1225](https://github.com/docker/cli/pull/1225)
* Added "local" log driver [moby/moby#37092](https://github.com/moby/moby/pull/37092)
* Amazon CloudWatch: adds `awslogs-endpoint` logging option [moby/moby#37374](https://github.com/moby/moby/pull/37374)
* Added support for global default address pools [moby/moby#37558](https://github.com/moby/moby/pull/37558) [docker/cli#1233](https://github.com/docker/cli/pull/1233)
* Configured containerd log-level to be the same as dockerd [moby/moby#37419](https://github.com/moby/moby/pull/37419)
* Added configuration option for cri-containerd [moby/moby#37519](https://github.com/moby/moby/pull/37519)
* Updates containerd client to v1.2.0-rc.1 [moby/moby#37664](https://github.com/moby/moby/pull/37664), [docker/engine#75](https://github.com/docker/engine/pull/75) / [moby/moby#37710](https://github.com/moby/moby/pull/37710)
* Added support for global default address pools [moby/moby#37558](https://github.com/moby/moby/pull/37558) [docker/cli#1233](https://github.com/docker/cli/pull/1233)
* Moved the `POST /session` endpoint out of experimental. [moby/moby#40028](https://github.com/moby/moby/pull/40028)


### Improvements

* Does not return "`<unknown>`" in /info response [moby/moby#37472](https://github.com/moby/moby/pull/37472)
* BuildKit: Changes `--console=[auto,false,true]` to `--progress=[auto,plain,tty]` [docker/cli#1276](https://github.com/docker/cli/pull/1276)
* BuildKit: Sets BuildKit's ExportedProduct variable to show useful errors in the future. [moby/moby#37439](https://github.com/moby/moby/pull/37439)
* Hides `--data-path-addr` flags when connected to a daemon that doesn't support this option [docker/docker/cli#1240](https://github.com/docker/cli/pull/1240)
* Only shows buildkit-specific flags if BuildKit is enabled [docker/cli#1438](https://github.com/docker/cli/pull/1438) / [docker/cli#1427](https://github.com/docker/cli/pull/1427)
* Improves version output alignment [docker/cli#1204](https://github.com/docker/cli/pull/1204)
* Sorts plugin names and networks in a natural order [docker/cli#1166](https://github.com/docker/cli/pull/1166), [docker/cli#1266](https://github.com/docker/cli/pull/1266)
* Updates bash and zsh [completion scripts](https://github.com/docker/cli/issues?q=label%3Aarea%2Fcompletion+milestone%3A18.09.0+is%3Aclosed)
* Passes log-level to containerd. [moby/moby#37419](https://github.com/moby/moby/pull/37419)
* Uses direct server return (DSR) in east-west overlay load balancing [docker/engine#93](https://github.com/docker/engine/pull/93) / [docker/libnetwork#2270](https://github.com/docker/libnetwork/pull/2270)
* Builder: temporarily disables bridge networking when using buildkit. [moby/moby#37691](https://github.com/moby/moby/pull/37691)
* Blocks task starting until node attachments are ready [moby/moby#37604](https://github.com/moby/moby/pull/37604)
* Propagates the provided external CA certificate to the external CA object in swarm. [docker/cli#1178](https://github.com/docker/cli/pull/1178)
* Removes Ubuntu 14.04 "Trusty Tahr" as a supported platform [docker-ce-packaging#255](https://github.com/docker/docker-ce-packaging/pull/255) / [docker-ce-packaging#254](https://github.com/docker/docker-ce-packaging/pull/254)
* Removes Debian 8 "Jessie" as a supported platform [docker-ce-packaging#255](https://github.com/docker/docker-ce-packaging/pull/255) / [docker-ce-packaging#254](https://github.com/docker/docker-ce-packaging/pull/254)
* Removes 'docker-' prefix for containerd and runc binaries [docker/engine#61](https://github.com/docker/engine/pull/61) / [moby/moby#37907](https://github.com/moby/moby/pull/37907), [docker-ce-packaging#241](https://github.com/docker/docker-ce-packaging/pull/241)
* Splits "engine", "cli", and "containerd" to separate packages, and run containerd as a separate systemd service [docker-ce-packaging#131](https://github.com/docker/docker-ce-packaging/pull/131), [docker-ce-packaging#158](https://github.com/docker/docker-ce-packaging/pull/158)
* Builds binaries with Go 1.10.4 [docker-ce-packaging#181](https://github.com/docker/docker-ce-packaging/pull/181)
* Removes `-ce` suffix from version string [docker-ce-packaging#206](https://github.com/docker/docker-ce-packaging/pull/206)

### Fixes

* BuildKit: Do not cancel buildkit status request. [moby/moby#37597](https://github.com/moby/moby/pull/37597)
* Fixes no error is shown if build args are missing during docker build [moby/moby#37396](https://github.com/moby/moby/pull/37396)
* Fixes error "unexpected EOF" when adding an 8GB file [moby/moby#37771](https://github.com/moby/moby/pull/37771)
* LCOW: Ensures platform is populated on `COPY`/`ADD`. [moby/moby#37563](https://github.com/moby/moby/pull/37563)
* Fixes mapping a range of host ports to a single container port [docker/cli#1102](https://github.com/docker/cli/pull/1102)
* Fixes `trust inspect` typo: "`AdminstrativeKeys`" [docker/cli#1300](https://github.com/docker/cli/pull/1300)
* Fixes environment file parsing for imports of absent variables and those with no name. [docker/cli#1019](https://github.com/docker/cli/pull/1019)
* Fixes a potential "out of memory exception" when running `docker image prune` with a large list of dangling images [docker/cli#1432](https://github.com/docker/cli/pull/1432) / [docker/cli#1423](https://github.com/docker/cli/pull/1423)
* Fixes pipe handling in ConEmu and ConsoleZ on Windows [moby/moby#37600](https://github.com/moby/moby/pull/37600)
* Fixes long startup on windows, with non-hns governed Hyper-V networks [docker/engine#67](https://github.com/docker/engine/pull/67) / [moby/moby#37774](https://github.com/moby/moby/pull/37774)
* Fixes daemon won't start when "runtimes" option is defined both in config file and cli [docker/engine#57](https://github.com/docker/engine/pull/57) / [moby/moby#37871](https://github.com/moby/moby/pull/37871)
* Loosens permissions on `/etc/docker` directory to prevent "permission denied" errors when using `docker manifest inspect` [docker/engine#56](https://github.com/docker/engine/pull/56) / [moby/moby#37847](https://github.com/moby/moby/pull/37847)
* Fixes denial of service with large numbers in `cpuset-cpus` and `cpuset-mems` [docker/engine#70](https://github.com/docker/engine/pull/70) / [moby/moby#37967](https://github.com/moby/moby/pull/37967)
* LCOW: Add `--platform` to `docker import` [docker/cli#1375](https://github.com/docker/cli/pull/1375) / [docker/cli#1371](https://github.com/docker/cli/pull/1371)
* LCOW: Add LinuxMetadata support by default on Windows [moby/moby#37514](https://github.com/moby/moby/pull/37514)
* LCOW: Mount to short container paths to avoid command-line length limit [moby/moby#37659](https://github.com/moby/moby/pull/37659)
* LCOW: Fix builder using wrong cache layer [moby/moby#37356](https://github.com/moby/moby/pull/37356)
* Fixes json-log file descriptors leaking when using `--follow` [docker/engine#48](https://github.com/docker/engine/pull/48) [moby/moby#37576](https://github.com/moby/moby/pull/37576) [moby/moby#37734](https://github.com/moby/moby/pull/37734)
* Fixes a possible deadlock on closing the watcher on kqueue [moby/moby#37392](https://github.com/moby/moby/pull/37392)
* Uses poller based watcher to work around the file caching issue in Windows [moby/moby#37412](https://github.com/moby/moby/pull/37412)
* Handles systemd-resolved case by providing appropriate resolv.conf to networking layer [moby/moby#37485](https://github.com/moby/moby/pull/37485)
* Removes support for TLS < 1.2 [moby/moby#37660](https://github.com/moby/moby/pull/37660)
* Seccomp: Whitelist syscalls linked to `CAP_SYS_NICE` in default seccomp profile [moby/moby#37242](https://github.com/moby/moby/pull/37242)
* Seccomp: move the syslog syscall to be gated by `CAP_SYS_ADMIN` or `CAP_SYSLOG` [docker/engine#64](https://github.com/docker/engine/pull/64) / [moby/moby#37929](https://github.com/moby/moby/pull/37929)
* SELinux: Fix relabeling of local volumes specified via Mounts API on selinux-enabled systems [moby/moby#37739](https://github.com/moby/moby/pull/37739)
* Adds warning if REST API is accessible through an insecure connection [moby/moby#37684](https://github.com/moby/moby/pull/37684)
* Masks proxy credentials from URL when displayed in system info [docker/engine#72](https://github.com/docker/engine/pull/72) / [moby/moby#37934](https://github.com/moby/moby/pull/37934)
* Fixes mount propagation for btrfs [docker/engine#86](https://github.com/docker/engine/pull/86) / [moby/moby#38026](https://github.com/moby/moby/pull/38026)
* Fixes nil pointer dereference in node allocation [docker/engine#94](https://github.com/docker/engine/pull/94) / [docker/swarmkit#2764](https://github.com/docker/swarmkit/pull/2764)

### Known Issues

* There are important changes to the upgrade process that, if not correctly followed, can have impact on the availability of applications running on the Swarm during upgrades. These constraints impact any upgrades coming from any version before 18.09 to version 18.09 or greater.
* With https://github.com/boot2docker/boot2docker/releases/download/v18.09.0/boot2docker.iso, connection is being refused from a node on the virtual machine. Any publishing of swarm ports in virtualbox-created docker-machine VM's will not respond. This is occurring on macOS and Windows 10, using docker-machine version 0.15 and 0.16.

   The following `docker run` command works, allowing access from host browser:

   `docker run -d -p 4000:80 nginx`

   However, the following `docker service` command fails, resulting in curl/chrome unable to connect (connection refused):

   `docker service create -p 5000:80 nginx`

   This issue is not apparent when provisioning 18.09.0 cloud VM's using docker-machine.

   Workarounds:
   * Use cloud VM's that don't rely on boot2docker.
   * `docker run` is unaffected.
   * For Swarm, set VIRTUALBOX_BOOT2DOCKER_URL=https://github.com/boot2docker/boot2docker/releases/download/v18.06.1-ce/boot2docker.iso.

   This issue is resolved in 18.09.1.

### Deprecation Notices

- Docker has deprecated support for Device Mapper as a storage driver. It will continue to be
supported at this time, but support will be removed in a future release.

    The [Overlay2 storage driver](../../storage/storagedriver/overlayfs-driver.md) is now the default for Docker engine implementations.

For more information on the list of deprecated flags and APIs, have a look at the [deprecation information](/engine/deprecated/) where you can find the target removal dates.

### End of Life Notification

In this release, Docker has also removed support for TLS < 1.2 [moby/moby#37660](https://github.com/moby/moby/pull/37660),
Ubuntu 14.04 "Trusty Tahr" [docker-ce-packaging#255](https://github.com/docker/docker-ce-packaging/pull/255) / [docker-ce-packaging#254](https://github.com/docker/docker-ce-packaging/pull/254), and Debian 8 "Jessie" [docker-ce-packaging#255](https://github.com/docker/docker-ce-packaging/pull/255) / [docker-ce-packaging#254](https://github.com/docker/docker-ce-packaging/pull/254).
