This minor release includes 10 security fixes following the security policy:
- net/mail: excessive CPU consumption in ParseAddress
The ParseAddress function constructed domain-literal address components through repeated string concatenation. When parsing large domain-literal components, this could cause excessive CPU consumption.
Thanks to Philippe Antoine (Catena cyber) for reporting this issue.
This is CVE-2025-61725 and Go issue https://go.dev/issue/75680.
- crypto/x509: quadratic complexity when checking name constraints
Due to the design of the name constraint checking algorithm, the processing time
of some inputs scales non-linearly with respect to the size of the certificate.
This affects programs which validate arbitrary certificate chains.
Thanks to Jakub Ciolek for reporting this issue.
This is CVE-2025-58187 and Go issue https://go.dev/issue/75681.
- crypto/tls: ALPN negotiation errors can contain arbitrary text
The crypto/tls conn.Handshake method returns an error on the server-side when
ALPN negotation fails which can contain arbitrary attacker controlled
information provided by the client-side of the connection which is not escaped.
This affects programs which log these errors without any additional form of
sanitization, and may allow injection of attacker controlled information into
logs.
Thanks to National Cyber Security Centre Finland for reporting this issue.
This is CVE-2025-58189 and Go issue https://go.dev/issue/75652.
- encoding/pem: quadratic complexity when parsing some invalid inputs
Due to the design of the PEM parsing function, the processing time for some
inputs scales non-linearly with respect to the size of the input.
This affects programs which parse untrusted PEM inputs.
Thanks to Jakub Ciolek for reporting this issue.
This is CVE-2025-61723 and Go issue https://go.dev/issue/75676.
- net/url: insufficient validation of bracketed IPv6 hostnames
The Parse function permitted values other than IPv6 addresses to be included in square brackets within the host component of a URL. RFC 3986 permits IPv6 addresses to be included within the host component, enclosed within square brackets. For example: "http://[::1]/". IPv4 addresses and hostnames must not appear within square brackets. Parse did not enforce this requirement.
Thanks to Enze Wang, Jingcheng Yang and Zehui Miao of Tsinghua University for reporting this issue.
This is CVE-2025-47912 and Go issue https://go.dev/issue/75678.
- encoding/asn1: pre-allocating memory when parsing DER payload can cause memory exhaustion
When parsing DER payloads, memories were being allocated prior to fully validating the payloads.
This permits an attacker to craft a big empty DER payload to cause memory exhaustion in functions such as asn1.Unmarshal, x509.ParseCertificateRequest, and ocsp.ParseResponse.
Thanks to Jakub Ciolek for reporting this issue.
This is CVE-2025-58185 and Go issue https://go.dev/issue/75671.
- net/http: lack of limit when parsing cookies can cause memory exhaustion
Despite HTTP headers having a default limit of 1 MB, the number of cookies that can be parsed did not have a limit.
By sending a lot of very small cookies such as "a=;", an attacker can make an HTTP server allocate a large amount of structs, causing large memory consumption.
net/http now limits the number of cookies accepted to 3000, which can be adjusted using the httpcookiemaxnum GODEBUG option.
Thanks to jub0bs for reporting this issue.
This is CVE-2025-58186 and Go issue https://go.dev/issue/75672.
- crypto/x509: panic when validating certificates with DSA public keys
Validating certificate chains which contain DSA public keys can cause programs
to panic, due to a interface cast that assumes they implement the Equal method.
This affects programs which validate arbitrary certificate chains.
Thanks to Jakub Ciolek for reporting this issue.
This is CVE-2025-58188 and Go issue https://go.dev/issue/75675.
- archive/tar: unbounded allocation when parsing GNU sparse map
tar.Reader did not set a maximum size on the number of sparse region data blocks in GNU tar pax 1.0 sparse files. A maliciously-crafted archive containing a large number of sparse regions could cause a Reader to read an unbounded amount of data from the archive into memory. When reading from a compressed source, a small compressed input could result in large allocations.
Thanks to Harshit Gupta (Mr HAX) - https://www.linkedin.com/in/iam-harshit-gupta/ for reporting this issue.
This is CVE-2025-58183 and Go issue https://go.dev/issue/75677.
- net/textproto: excessive CPU consumption in Reader.ReadResponse
The Reader.ReadResponse function constructed a response string through
repeated string concatenation of lines. When the number of lines in a response is large,
this could cause excessive CPU consumption.
Thanks to Jakub Ciolek for reporting this issue.
This is CVE-2025-61724 and Go issue https://go.dev/issue/75716.
Signed-off-by: Paweł Gronowski <pawel.gronowski@docker.com>
This warning is better handled by the daemon, where applicable, as
the client does not have all information available to determine
if using a localhost / loopback-address for the DNS is possible.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The ResolveDefaultContext function was exported in [cli@f820766] to allow
(unit) testing, but did not document that it was only exported for this
purpose. The only external use of this function is in buildx, which uses
it in a unit test that can be implemented without this function.
This patch deprecates the function so that we can remove it.
[cli@f820766]: f820766f6a
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
It's just a wrapper around WithAPIClient, and not needed for this
test, which validates that "Initialize" properly creates the context
store, even if a client was already set;
3b26cfce8b
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
On Docker CLI versions before v28.0.0, using an unknown flag would print
the usage output, showing all available top-level flags and commands;
docker --badopt
unknown flag: --badopt
See 'docker --help'.
Usage: docker [OPTIONS] COMMAND
A self-sufficient runtime for containers
Options:
--config string Location of client config files (default "/root/.docker")
...
This output did not include plugin-commands, making the usage output
incomplete. That issue was fixed in [cli@40a6cf7], which loaded all
available cli-plugins, so that a stub was created for printing the
plugin commands in the usage output. Similarly, [cli@79a75da] added
code to hide experimental commands and commands not supported by the
daemon.
However, since 28.0.0 (commit [cli@f28fc7f]), the usage output was
removed for this error, so loading plugins is no longer needed;
docker --badopt
unknown flag: --badopt
Usage: docker [OPTIONS] COMMAND [ARG...]
Run 'docker --help' for more information
This patch removes the code added in [cli@40a6cf7] and [cli@79a75da].
With this patch, the output is still the same;
docker --unknown-flag buildx ls --no-such
unknown flag: --unknown-flag
Usage: docker [OPTIONS] COMMAND [ARG...]
Run 'docker --help' for more information
This function only handles flags defined by the CLI itself; invalid
flags for plugins are handled by the plugin itself, so are not
impacted;
docker buildx ls --no-such
unknown flag: --no-such
Usage: docker buildx ls
Run 'docker buildx ls --help' for more information
[cli@f28fc7f]: f28fc7f82f
[cli@40a6cf7]: 40a6cf7c47
[cli@79a75da]: 79a75da0fd
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Support for daemon-side auto-remove was added in API v1.25; on older
versions of the daemon, the client was responsible for removing the
container after it exited (see [moby@6dd8e10])
On API versions < 1.30, it used the events API for this purpose, and
would wait for a "die", "detach" or "detroy" events to know the container
exited, and could be removed or (when attached, but without a TTY) to
get the container's exit-status. (see [cli@38591f2]).
API version 1.24 (docker 1.12) is 9 Years old (July 29, 2016), and API
1.30 (docker 17.06) is 8 Years old (Jun 20, 2017), and long EOL. While
technically, a CLI could negotiate API 1.30 or older, this would only
be in cases where either API version negotiation failed, or the version
was explicitly overridden through `DOCKER_API_VERSION` for testing.
Either of those cases would be rare, and not worth the technical complexity
to support. This patch removes support for AutoRemove on API < 1.30.
[moby@6dd8e10]: 6dd8e10d6e
[cli@38591f2]: 38591f20d0
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
The `VirtualSize` field was deprecated in [moby@1261fe6], and omitted / removed
in API v1.44 in [moby@913b0f5], and the corresponding formatting placeholder
was deprecated in [cli@f02301a].
This patch removes the formatting function, which also removes it from the
`docker image ls --format=json` output.
[moby@1261fe6]: 1261fe69a3
[moby@913b0f5]: 913b0f51ca
[cli@f02301a]: f02301ab5d
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Relates to [cli@27b2797], which forked this type from the Moby API, and
[cli@aab947d], which fixed the deprecation comment.
This field is no longer used since Docker 1.11 (API version 1.23) through
[moby@aee260d] and [engine-api@9a9e468], and the fix of the deprecation
comment was included in the 28.4.0 release.
This patch removes the field.
[cli@27b2797]: 27b2797f7d
[cli@aab947d]: aab947de8f
[moby@aee260d]: aee260d4eb
[engine-api@9a9e468]: 9a9e468f50
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This utility was added in 9b83d5bbf9, but
was never used. Remove the utility, and rewrite the error returned to
implement the errdefs.NotFound interface, so that it can be detected
using the errdefs.IsNotFound() utility if needed.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
Commit [cli@27b2797] forked the AuthConfig type from the API, and changed
existing code to do a direct cast / convert of the forked type to the API
type. This can cause issues if the API types diverges, such as the removal
of the Email field.
This patch explicitly maps each field to the corresponding API type, but
adds some TODOs, because various code-paths only included a subset of the
fields, which may be intentional for fields that were meant to be handled
on the daemon / registry-client only.
We should evaluate these conversions to make sure these fields should
be sent from the client or not (and possibly even removed from the API
type).
[cli@27b2797]: 27b2797f7d
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
