Unbound before 1.9.5 allows an assertion failure and denial of service in dname_pkt_copy via an invalid packet. Reference: https://ostif.org/our-audit-of-unbound-dns-by-x41-d-sec-full-results/
Upstream patch: https://github.com/NLnetLabs/unbound/commit/d2eb78e871153f22332d30c6647f3815148f21e5
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2021:1853 https://access.redhat.com/errata/RHSA-2021:1853
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2019-25037
This issue has been addressed in the following products: Red Hat Enterprise Linux 8.2 Extended Update Support Via RHSA-2022:0632 https://access.redhat.com/errata/RHSA-2022:0632