{"id":"RLSA-2026:70754","summary":"Critical: unbound security update","details":"The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. \n\nSecurity Fix(es):\n\n* unbound: Unbound: Remote Code Execution Vulnerability in CNAME Synthesis (CVE-2026-82717)\n\n* unbound: Unbound: Heap buffer overflow via malicious DNSSEC response (CVE-2026-81634)\n\n* unbound: Unbound: Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY (CVE-2026-81642)\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":"2026-09-24T06:30:02.736539707Z","published":"2026-09-24T06:01:33.182947Z","upstream":["CVE-2026-81634","CVE-2026-81642","CVE-2026-82717"],"database_specific":{"license_url":"https://creativecommons.org/licenses/by/4.0/","source_advisory":"RHSA-2026:70754","license":"CC-BY-4.0"},"references":[{"type":"ADVISORY","url":"https://errata.rockylinux.org/RLSA-2026:70754"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535051"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535054"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2535059"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:70754"}],"affected":[{"package":{"name":"unbound","ecosystem":"Rocky Linux:8","purl":"pkg:rpm/rocky-linux/unbound?distro=rocky-linux-8&epoch=0"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.16.2-5.14.el8_10.4"}],"database_specific":{"yum_repository":"AppStream"}}],"database_specific":{"source":"https://storage.googleapis.com/resf-osv-data/RLSA-2026:70754.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}],"credits":[{"name":"Rocky Enterprise Software Foundation"},{"name":"Red Hat"}]}