RHSA-2026:90424HighCVSS 7.5

Red Hat Security Advisory: buildah security update

Published
October 26, 2026
Last Modified
November 3, 2026

🔗 CVE IDs covered (4)

CVE-2025-11395 →CVE-2026-56855 →CVE-2026-78667 →CVE-2026-111943 →

📋 Description

CVE-2025-11395 — podman: Arbitrary file write when importing OCI archive CVE-2026-56855 — golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via crafted messages CVE-2026-78667 — net/http: golang: golang: Denial of Service via crafted HTTP Range headers CVE-2026-111943 — crypto/x509: golang: crypto/x509: Man-in-the-middle attacks via untrusted intermediate certificates

🎯 Affected products22

  • Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-2:1.43.4-2.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-2:1.43.4-2.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-2:1.43.4-2.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-2:1.43.4-2.el9_8.src as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-2:1.43.4-2.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-debuginfo-2:1.43.4-2.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-debuginfo-2:1.43.4-2.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-debuginfo-2:1.43.4-2.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-debuginfo-2:1.43.4-2.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-debugsource-2:1.43.4-2.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-debugsource-2:1.43.4-2.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-debugsource-2:1.43.4-2.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-debugsource-2:1.43.4-2.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-tests-2:1.43.4-2.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-tests-2:1.43.4-2.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-tests-2:1.43.4-2.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-tests-2:1.43.4-2.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-tests-debuginfo-2:1.43.4-2.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-tests-debuginfo-2:1.43.4-2.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-tests-debuginfo-2:1.43.4-2.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • buildah-tests-debuginfo-2:1.43.4-2.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. Workaround: Red Hat is not aware of a practical mitigation that fully prevents this issue while maintaining affected SSH functionality. Where operationally possible, restrict SSH connectivity to trusted systems. Apply relevant Red Hat updates when they become available. Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. Workaround: See the security bulletin for a detailed mitigation procedure.

🔗 References (6)