RHSA-2026:90424 — Security Advisory

An update for buildah is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

The buildah package provides a tool for facilitating building OCI container images. Among other things, buildah enables you to: Create a working container, either from scratch or using an image as a starting point; Create an image, either from a working container or using the instructions in a Dockerfile; Build both Docker and OCI images.

Security Fix(es):

• podman: Arbitrary file write when importing OCI archive (CVE-2025-11395)

• golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via crafted messages (CVE-2026-56855)

• net/http: golang: golang: Denial of Service via crafted HTTP Range headers (CVE-2026-78667)

• crypto/x509: golang: crypto/x509: Man-in-the-middle attacks via untrusted intermediate certificates (CVE-2026-111943)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.