{"id":"RLSA-2026:29455","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.","modified":"2026-06-26T12:30:08.376182078Z","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"],"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"}],"affected":[{"package":{"name":"buildah","ecosystem":"Rocky Linux:9","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"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:29455.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}