This release contains a security fix for [CVE-2024-29018], a potential data exfiltration from 'internal' networks via authoritative DNS servers.
New
Add Subpath field to the VolumeOptions making it possible to mount a subpath of a volume. moby/moby#45687
Add volume-subpath support to the mount flag (--mount type=volume,...,volume-subpath=<subpath>). docker/cli#4331
Accept = separators and [ipv6] in compose files for docker stack deploy. docker/cli#4860
rootless: Add support for enabling host loopback by setting the DOCKERD_ROOTLESS_ROOTLESSKIT_DISABLE_HOST_LOOPBACK environment variable to false (defaults to true). This lets containers connect to the host by using IP address 10.0.2.2. moby/moby#47352
containerd image store: docker image ls no longer creates duplicates entries for multi-platform images. moby/moby#45967
[CVE-2024-29018]: Do not forward requests to external DNS servers for a container that is only connected to an 'internal' network. Previously, requests were forwarded if the host's DNS server was running on a loopback address, like systemd's 127.0.0.53. moby/moby#47589
Ensure that a generated MAC address is not restored when a container is restarted, but a configured MAC address is preserved. moby/moby#47233
[!WARNING]
Containers created using Docker Engine 25.0.0 may have duplicate MAC addresses, they must be re-created.
Containers created using version 25.0.0 or 25.0.1 with user-defined MAC addresses will get generated MAC addresses when they are started using 25.0.2. They must also be re-created.
Always attempt to enable IPv6 on a container's loopback interface, and only include IPv6 in /etc/hosts if successful. moby/moby#47062
[!NOTE]
By default, IPv6 will remain enabled on a container's loopback interface when the container is not connected to an IPv6-enabled network.
For example, containers that are only connected to an IPv4-only network now have the ::1 address on their loopback interface.
To disable IPv6 in a container,
use option --sysctl net.ipv6.conf.all.disable_ipv6=1 in the create or run command,
or the equivalent sysctls option in the service configuration section of a Compose file.
If IPv6 is not available in a container because it has been explicitly disabled for the container,
or the host's networking stack does not have IPv6 enabled (or for any other reason)
the container's /etc/hosts file will not include IPv6 entries.
Fix ADD Dockerfile instruction failing with lsetxattr <file>: operation not supported when unpacking archive with xattrs onto a filesystem that doesn't support them. moby/moby#47175
Fix docker container start failing when used with --checkpoint. moby/moby#47456
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Bumps github.com/docker/docker from 24.0.0-rc.2.0.20230718135204-8e51b8b59cb8+incompatible to 26.0.0+incompatible.
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