RHSA-2026:98450: Important: buildah security update
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): encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal (CVE-2026-33818) net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution (CVE-2026-56860) net/http: golang: Go net/http: Unencrypted HTTP/2 connections vulnerable to Denial of Service (CVE-2026-56853) html/template: golang: Go html/template: Cross-Site Scripting via pathological input (CVE-2026-56858) crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages (CVE-2026-56862) 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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/buildahto a version that resolves this vulnerability.Fixed in 1.43.2-4.el9_9 - Upgrade
Upgrade
redhat/buildah-debuginfoto a version that resolves this vulnerability.Fixed in 1.43.2-4.el9_9 - Upgrade
Upgrade
redhat/buildah-debugsourceto a version that resolves this vulnerability.Fixed in 1.43.2-4.el9_9 - Upgrade
Upgrade
redhat/buildah-teststo a version that resolves this vulnerability.Fixed in 1.43.2-4.el9_9 - Upgrade
Upgrade
redhat/buildah-tests-debuginfoto a version that resolves this vulnerability.Fixed in 1.43.2-4.el9_9 - Upgrade
Upgrade
redhat/buildahto a version that resolves this vulnerability.Fixed in 1.43.2-4.el9_9.aa - Upgrade
Upgrade
redhat/buildah-debuginfoto a version that resolves this vulnerability.Fixed in 1.43.2-4.el9_9.aa - Upgrade
Upgrade
redhat/buildah-debugsourceto a version that resolves this vulnerability.Fixed in 1.43.2-4.el9_9.aa - Upgrade
Upgrade
redhat/buildah-teststo a version that resolves this vulnerability.Fixed in 1.43.2-4.el9_9.aa - Upgrade
Upgrade
redhat/buildah-tests-debuginfoto a version that resolves this vulnerability.Fixed in 1.43.2-4.el9_9.aa
Event History
Frequently Asked Questions
Which package variants should be included in the update inventory?
The update covers buildah, buildah-debuginfo, buildah-debugsource, buildah-tests, and buildah-tests-debuginfo.