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Fedora 43: docker-buildkit Critical Local Escalation CVE-2024-25621

fedora
Calendar Grey December 26, 2025
Dist Fedora Esm H88
Update for docker-buildkit v0.26.3 on Fedora 43 fixes CVE-2024-25621 with critical exploit risk.
Update to release v0.26.3 Resolves CVE-2024-25621: rhbz#2419004, rhbz#2419033, rhbz#2419427 Upstream fix

Summary

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

Update Information:

Update to release v0.26.3 Resolves CVE-2024-25621: rhbz#2419004, rhbz#2419033, rhbz#2419427 Upstream fix

Topics%20covered

Topics Covered

security advisory fedora critical local privilege escalation docker-buildkit cve-2024-25621

Change Log

* Tue Dec 16 2025 Bradley G Smith - 0.26.3-1 - Update to release v0.26.3 - Resolves CVE-2024-25621: rhbz#2419004, rhbz#2419033, rhbz#2419427 - Upstream fix

References


[ 1 ] Bug #2419004 - CVE-2024-25621 docker-buildkit: containerd local privilege escalation [fedora-42] https://bugzilla.redhat.com/show_bug.cgi?id=2419004 [ 2 ] Bug #2419033 - CVE-2024-25621 docker-buildkit: containerd local privilege escalation [fedora-43] https://bugzilla.redhat.com/show_bug.cgi?id=2419033 [ 3 ] Bug #2419427 - CVE-2024-25621 docker-buildkit: containerd local privilege escalation [fedora-41] https://bugzilla.redhat.com/show_bug.cgi?id=2419427

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-94f9b9b1b1' 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
Lowest
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Critical

Name: docker-buildkit
Product: Fedora 43
Version: 0.26.3
Release: 1.fc43
URL: https://github.com/moby/buildkit
Summary: Concurrent, cache-efficient, and Dockerfile-agnostic builder toolkit

Topics%20covered

Topics Covered

security advisory fedora critical local privilege escalation docker-buildkit cve-2024-25621

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