{"id":"CLSA-2026-1779437608","summary":"dnsmasq: Fix of 5 CVEs","details":"- CVE-2026-2291: fix buffer overflow in union bigname\n- CVE-2026-4890: fix NSEC bitmap parsing infinite loop and OOB reads\n- CVE-2026-4891: verify rdlen field in RRSIG packets\n- CVE-2026-4892: fix buffer overflow in helper.c with large CLIDs\n- CVE-2026-4893: fix broken client subnet validation","modified":"2026-05-27T11:18:18.687969505Z","published":"2026-05-22T08:13:33Z","upstream":["CVE-2026-2291","CVE-2026-4890","CVE-2026-4891","CVE-2026-4892","CVE-2026-4893"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/centos-stream8els/CLSA-2026-1779437608.html"}],"affected":[{"package":{"name":"dnsmasq","ecosystem":"TuxCare:CentOS-Stream:8","purl":"pkg:rpm/tuxcare/dnsmasq?distro=centos-stream-8"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.79-33.el8.tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1779437608.json"}},{"package":{"name":"dnsmasq-utils","ecosystem":"TuxCare:CentOS-Stream:8","purl":"pkg:rpm/tuxcare/dnsmasq-utils?distro=centos-stream-8"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.79-33.el8.tuxcare.els1"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/centos-stream8els/CLSA-2026-1779437608.json"}}],"schema_version":"1.7.5"}