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Multiple Fedora Docker Vulnerabilities Addressed in Recent Updates

Multiple Fedora Docker Vulnerabilities Addressed in Recent Updates

First seen 23 May 2026, 08:54 UTC • •

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ThreatCluster AI
ThreatCluster •May 24, 2026 at 08:33 UTC

Fedora has released updates for docker-buildx and docker-buildkit to address CVE-2026-39984, which involves improper certificate validation. The vulnerabilities affect multiple Fedora versions, including 42, 43, and 44, with docker-buildx and docker-buildkit both impacted. The updates were published on May 13, 2026, and resolve issues that could allow attackers to exploit the improper validation in the verifier. Users are advised to upgrade to the latest versions (0.34.0 for docker-buildx and 0.30.0 for docker-buildkit) to mitigate these vulnerabilities. The flaws could potentially lead to security breaches if left unpatched. The updates are available through the dnf package manager. This situation highlights the importance of timely updates in maintaining system security.

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Timeline

2026-04-14
CVE-2026-39984 published
CVE-2026-39984 was published, detailing improper certificate validation in docker-buildx and docker-buildkit.
Linuxsecurity
2026-05-13
Updates released for docker-buildx and docker-buildkit
Fedora released updates to address CVE-2026-39984, impacting docker-buildx and docker-buildkit.
Linuxsecurity
Recent
Users advised to upgrade
Fedora users are urged to upgrade to the latest versions to mitigate the vulnerabilities.
Linuxsecurity

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