Alerts This Week
Warning Icon 1 876
Alerts This Week
Warning Icon 1 876

Fedora 44 docker-buildkit High Denial of Service Risk CVE-2026-39829

fedora
Calendar Grey June 26, 2026
Dist Fedora Esm H88
This advisory details the docker-buildkit update on Fedora 44, addressing critical Denial of Service vulnerabilities and enhancements.
Update to release v0.31.0 Resolve CVE-2026-39829: rhbz#2489939, rhbz#2490056 Upstream new features and fixes

Summary

Concurrent, cache-efficient, and Dockerfile-agnostic builder toolkit.

Update Information:

Update to release v0.31.0 Resolve CVE-2026-39829: rhbz#2489939, rhbz#2490056 Upstream new features and fixes

Topics%20covered

Topics Covered

security advisory denial of service fedora update important docker-buildkit

Change Log

* Wed Jun 17 2026 Bradley G Smith - 0.31.0-1 - Update to release v0.31.0 - Resolve CVE-2026-39829: rhbz#2489939, rhbz#2490056 - Upstream new features and fixes

References


[ 1 ] Bug #2489939 - CVE-2026-39828 docker-buildkit: golang.org/x/crypto/ssh: Unauthorized command execution via discarded SSH permissions [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2489939 [ 2 ] Bug #2490056 - CVE-2026-39829 docker-buildkit: 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=2490056

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-1e00728616' 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
important
Lowest
Low
Medium
High
Critical

Name: docker-buildkit
Product: Fedora 44
Version: 0.31.0
Release: 1.fc44
URL: https://github.com/moby/buildkit
Summary: Concurrent, cache-efficient, and Dockerfile-agnostic builder toolkit

Topics%20covered

Topics Covered

security advisory denial of service fedora update important docker-buildkit

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here