{"schema_version": "1.7.0", "id": "RLSA-2026:29455", "modified": "2026-06-26T12:06:10.378924Z", "published": "2026-06-26T12:03:13.137376Z", "upstream": ["CVE-2026-25679", "CVE-2026-32280", "CVE-2026-32281", "CVE-2026-32283", "CVE-2026-39829", "CVE-2026-39830"], "summary": "Important: buildah security update", "details": "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. \n\nSecurity Fix(es):\n\n* net/url: Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679)\n\n* crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation (CVE-2026-32281)\n\n* crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages (CVE-2026-32283)\n\n* crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building (CVE-2026-32280)\n\n* golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via crafted public key with excessive parameters (CVE-2026-39829)\n\n* golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via resource leak from unsolicited SSH responses (CVE-2026-39830)\n\nFor 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.", "severity": [{"type": "CVSS_V3", "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}], "affected": [{"package": {"ecosystem": "Rocky Linux:9", "name": "buildah", "purl": "pkg:rpm/rocky-linux/buildah?distro=rocky-linux-9&epoch=2"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "2:1.43.1-2.el9_8"}], "database_specific": {"yum_repository": "AppStream"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:29455"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2445356"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456333"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456338"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456339"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480681"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480684"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}]}