RHSA-2026:43122MediumCVSS 6.5
Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update
🔗 CVE IDs covered (2)
📋 Description
CVE-2026-15788 — github.com/moby/buildkit: BuildKit: Information Disclosure via Improper Handling of NTFS Directory Junctions CVE-2026-15792 — github.com/moby/buildkit: BuildKit: Denial of Service via malicious client request
🎯 Affected products4
- Red Hat Hardened Images
- buildah-main@aarch64 as a component of Red Hat Hardened Images
- buildah-main@src as a component of Red Hat Hardened Images
- buildah-main@x86_64 as a component of Red Hat Hardened Images
✅ Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Workaround: Avoid building container images using BuildKit frontends from untrusted sources. A BuildKit frontend is typically specified using a "# syntax" directive at the top of a Dockerfile, or with the "--frontend" option to the "buildctl build" command. Only use frontend images that come from a trusted source.
🔗 References (6)
- selfhttps://access.redhat.com/errata/RHSA-2026:43122
- externalhttps://access.redhat.com/security/cve/CVE-2026-15788
- externalhttps://access.redhat.com/security/updates/classification/
- externalhttps://images.redhat.com/
- externalhttps://access.redhat.com/security/cve/CVE-2026-15792
- selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_43122.json