{"schema_version": "1.7.0", "id": "RLSA-2026:23231", "modified": "2026-06-06T12:05:59.829562Z", "published": "2026-06-06T12:04:50.645853Z", "upstream": ["CVE-2026-33278", "CVE-2026-42944", "CVE-2026-42959"], "summary": "Important: unbound security update", "details": "The unbound packages provide a validating, recursive, and caching DNS or DNSSEC resolver. \n\nSecurity Fix(es):\n\n* unbound: Heap overflow and crash with multiple nsid, cookie, padding EDNS options (CVE-2026-42944)\n\n* unbound: Unbound DNSSEC Validator Denial of Service via Incorrect Write Offset Counter in Chase-Reply Messages (CVE-2026-42959)\n\n* unbound: Unbound DNSSEC Validator Use-After-Free via Deep Copy Pointer Overwrite Leading to DoS and Possible Remote Code Execution (CVE-2026-33278)\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:H/PR:N/UI:N/S:U/C:H/I:H/A:H"}], "affected": [{"package": {"ecosystem": "Rocky Linux:10", "name": "unbound", "purl": "pkg:rpm/rocky-linux/unbound?distro=rocky-linux-10&epoch=0"}, "ranges": [{"type": "ECOSYSTEM", "events": [{"introduced": "0"}, {"fixed": "0:1.24.2-7.el10_2.1"}], "database_specific": {"yum_repository": "AppStream"}}]}], "references": [{"type": "ADVISORY", "url": "https://errata.rockylinux.org/RLSA-2026:23231"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2479808"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2479806"}, {"type": "REPORT", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2479774"}], "credits": [{"name": "Rocky Enterprise Software Foundation"}, {"name": "Red Hat"}]}