{"id":"CLSA-2026-1790784899","summary":"unbound: Fix of 2 CVEs","details":"- CVE-2026-81634: bounds-check the scratch buffer in rrset_canonical() and\n  rrset_canonicalize_to_buffer() before writing the RRSIG rdata, the first\n  canonical owner name and each RR's rdata, so a large rrset can no longer\n  be written past the end of the buffer\n- CVE-2026-80225: cap the number of pipelined TCP/DoT queries drained per\n  event-loop visit in tcp_req_info_read_again() and tcp_more_read_again()\n  and defer the remainder via a zero-delay timer, so one connection can no\n  longer starve the other file descriptors","modified":"2026-10-26T09:43:43.545823384Z","published":"2026-09-30T16:15:13Z","upstream":["CVE-2026-80225","CVE-2026-81634"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/tuxcare9.6esu/CLSA-2026-1790784899.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80225"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-81634"}],"affected":[{"package":{"name":"python3-unbound","ecosystem":"TuxCare:AlmaLinux:9.6","purl":"pkg:rpm/tuxcare/python3-unbound?distro=almalinux-9.6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.2-19.el9_6.1.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1790784899.json"}},{"package":{"name":"unbound","ecosystem":"TuxCare:AlmaLinux:9.6","purl":"pkg:rpm/tuxcare/unbound?distro=almalinux-9.6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.2-19.el9_6.1.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1790784899.json"}},{"package":{"name":"unbound-devel","ecosystem":"TuxCare:AlmaLinux:9.6","purl":"pkg:rpm/tuxcare/unbound-devel?distro=almalinux-9.6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.2-19.el9_6.1.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1790784899.json"}},{"package":{"name":"unbound-dracut","ecosystem":"TuxCare:AlmaLinux:9.6","purl":"pkg:rpm/tuxcare/unbound-dracut?distro=almalinux-9.6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.2-19.el9_6.1.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1790784899.json"}},{"package":{"name":"unbound-libs","ecosystem":"TuxCare:AlmaLinux:9.6","purl":"pkg:rpm/tuxcare/unbound-libs?distro=almalinux-9.6"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.2-19.el9_6.1.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.6esu/CLSA-2026-1790784899.json"}}],"schema_version":"1.9.0"}