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Fedora 43 moby-engine Critical Sec Issues CVE-2026-39828-30

fedora
Calendar Grey June 27, 2026
Dist Fedora Esm H88
Update to moby-engine in Fedora 43 addresses critical security issues, improving container functionality and safety.
Update to release v29.6.0 Resolves: rhbz#2490590 Resolves CVE-2026-39828: rhbz#2489945 Resolves CVE-2026-39829: rhbz#2490099 Resolves CVE-2026-39830: rhbz#2490466

Summary

Docker is an open source project to build, ship and run any application as a

lightweight container.

Docker containers are both hardware-agnostic and platform-agnostic. This means

they can run anywhere, from your laptop to the largest EC2 compute instance and

everything in between — and they do not require you to use a particular

language, framework or packaging system. That makes them great building blocks

for deploying and scaling web apps, databases, and backend services without

depending on a particular stack or provider.

Update Information:

Update to release v29.6.0 Resolves: rhbz#2490590 Resolves CVE-2026-39828: rhbz#2489945 Resolves CVE-2026-39829: rhbz#2490099 Resolves CVE-2026-39830: rhbz#2490466 Upstream fixes and enhancements

Topics%20covered

Topics Covered

security advisory denial of service fedora critical command execution application container

Change Log

* Fri Jun 19 2026 Bradley G Smith - 29.6.0-1 - Update to release v29.6.0 - Resolves: rhbz#2490590 - Resolves CVE-2026-39828: rhbz#2489945 - Resolves CVE-2026-39829: rhbz#2490099 - Resolves CVE-2026-39830: rhbz#2490466 - Upstream fixes and enhancements

References


[ 1 ] Bug #2489945 - CVE-2026-39828 moby-engine: golang.org/x/crypto/ssh: Unauthorized command execution via discarded SSH permissions [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2489945 [ 2 ] Bug #2490099 - CVE-2026-39829 moby-engine: golang.org/x/crypto/ssh: Denial of Service via crafted public key with excessive parameters [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2490099 [ 3 ] Bug #2490466 - CVE-2026-39830 moby-engine: golang.org/x/crypto/ssh: Denial of Service via resource leak from unsolicited SSH responses [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2490466 [ 4 ] Bug #2490590 - moby-engine-29.6.0 is available https://bugzilla.redhat.com/show_bug.cgi?id=2490590

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-0feb6e4967' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
critical
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Name: moby-engine
Product: Fedora 43
Version: 29.6.0
Release: 1.fc43
URL: https://github.com/moby/moby
Summary: The open-source application container engine

Topics%20covered

Topics Covered

security advisory denial of service fedora critical command execution application container

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