Alerts This Week
Warning Icon 1 1,229
Alerts This Week
Warning Icon 1 1,229

Fedora 43 docker-buildx Important SSH Command Execution Fix 2026-3cca6f41d4

fedora
Calendar Grey June 26, 2026
Dist Fedora Esm H88
Fedora update provides docker-buildx v0.35.0 addressing critical issues for enhanced security features.
Update to release v0.35.0 Resolves: rhbz#2487819 Resolves CVE-2026-39828: rhbz#2489918, rhbz#2490102 Upstream enhancements, new features, and fixes

Summary

Docker CLI plugin for extended build capabilities with BuildKit.

Update Information:

Update to release v0.35.0 Resolves: rhbz#2487819 Resolves CVE-2026-39828: rhbz#2489918, rhbz#2490102 Upstream enhancements, new features, and fixes

Topics%20covered

Topics Covered

security advisory denial of service fedora vulnerability docker-buildx unauthorized command execution

Change Log

* Thu Jun 18 2026 Bradley G Smith - 0.35.0-1 - Update to release v0.35.0 - Resolves: rhbz#2487819 - Resolves CVE-2026-39828: rhbz#2489918, rhbz#2490102 - Upstream enhancements, new features, and fixes * Tue May 19 2026 Bradley G Smith - 0.34.1-1 - Update to release v0.34.1 - Resolves: rhbz#2479976 - Upstream fixes

References


[ 1 ] Bug #2487819 - docker-buildx-0.35.0 is available https://bugzilla.redhat.com/show_bug.cgi?id=2487819 [ 2 ] Bug #2489918 - CVE-2026-39828 docker-buildx: golang.org/x/crypto/ssh: Unauthorized command execution via discarded SSH permissions [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2489918 [ 3 ] Bug #2490102 - CVE-2026-39829 docker-buildx: 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=2490102

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-3cca6f41d4' 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-buildx
Product: Fedora 43
Version: 0.35.0
Release: 1.fc43
URL: https://github.com/docker/buildx
Summary: Docker CLI plugin for extended build capabilities with BuildKit

Topics%20covered

Topics Covered

security advisory denial of service fedora vulnerability docker-buildx unauthorized command execution

Get the latest News and Insights

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

Your message here