{"id":"CLSA-2026-1786637650","summary":"unbound: Fix of 14 CVEs","details":"- CVE-2024-33655: add the upstream wait-limit and discard-timeout mechanism\n  so accumulated recursion replies can no longer be released as a pulsing\n  burst (DNSBomb), including every upstream follow-up to that mechanism:\n  discard only UDP replies and never a reply on an open stream connection,\n  clear the HTTP/2 stream back-pointer on the drop paths, account discarded\n  replies in mesh num_reply_addrs, and fix CVE-2026-56444 in the\n  serve-expired discard path\n- CVE-2024-43167: NULL-check the first forward stub name in ub_ctx_set_fwd()\n  to prevent a NULL pointer dereference in libunbound, and reject a\n  forward-zone, stub-zone or view without a name at config parse time so no\n  name-less object reaches the daemon\n- CVE-2026-42955: clamp the cached TTL of parent-side A/AAAA glue as well as\n  NS records so a client query can no longer renew a ghost domain delegation\n- CVE-2026-46582: keep a secure wildcard RRset out of the rrset cache until\n  the NSEC wildcard proof completes, preventing poisoning via the\n  serve-expired reply path\n- CVE-2026-50243: skip the response-ip/RPZ rewrite for BOGUS answers so a\n  spoofed DNSSEC-protected answer is no longer redirected as INSECURE\n- CVE-2026-55708: enter the default-protected local zones when\n  unbound-control view_local_data creates a view-specific local zone tree","modified":"2026-10-26T09:43:28.199914775Z","published":"2026-08-21T13:02:14Z","upstream":["CVE-2024-33655","CVE-2024-43167","CVE-2026-42955","CVE-2026-46582","CVE-2026-50243","CVE-2026-55708","CVE-2026-56444"],"references":[{"type":"ADVISORY","url":"https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1786637650.html"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-33655"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-43167"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42955"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44621"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44687"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44690"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-46582"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50046"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50243"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50248"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50251"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55708"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55717"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56416"}],"affected":[{"package":{"name":"python3-unbound","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/python3-unbound?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.2-3.el9_2.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1786637650.json"}},{"package":{"name":"unbound","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/unbound?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.2-3.el9_2.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1786637650.json"}},{"package":{"name":"unbound-devel","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/unbound-devel?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.2-3.el9_2.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1786637650.json"}},{"package":{"name":"unbound-libs","ecosystem":"TuxCare:AlmaLinux:9.2","purl":"pkg:rpm/tuxcare/unbound-libs?distro=almalinux-9.2"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.16.2-3.el9_2.tuxcare.els14"}]}],"database_specific":{"source":"https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1786637650.json"}}],"schema_version":"1.9.0"}