CLSA-2026-1779533909 unbound: Fix of 3 CVEs

CVE-2026-33278: dangling pointer dereference in dnsmsgdeepcopyregion during DS sub-query suspend/resume; the previously-backported CVE-2023-50387-CVE-2023-50868.patch dragged the vulnerable 'res-rep = origin-rep;' struct-assignment into our 1.16.2 tree. Save the destination rrsets pointer,...

CVE-2026-33278 Possible arbitrary code execution during DNSSEC validation

NLnet Labs Unbound 1.19.1 up to and including version 1.25.0 has a vulnerability in the DNSSEC validator that enables denial of service and possible remote code execution as a result of deep copying a data structure and erroneously overwriting a destination pointer. An adversary can exploit the...

CVE-2026-33278

NLnet Labs Unbound 1.19.1–1.25.0 contains a vulnerability in the DNSSEC validator: during NSEC3-budget–driven validation suspensions, Unbound deep-copies response messages and a struct-assignment overwrites the destination pointer with the source pointer. After freeing the sub-query region, the v...