Unbound before 1.9.4 accesses uninitialized memory, which allows remote attackers to trigger a crash via a crafted NOTIFY query. The source IP address of the query must match an access-control rule.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade unbound | Nov 27, 2019 | Oct 3, 2019 |
| Arch Linux | — | Upgrade to the latest version of Arch Linux | Jul 11, 2025 | Oct 3, 2019 |
| Debian | — | Upgrade unbound | Oct 17, 2019 | Oct 3, 2019 |
| Freebsd | — | Upgrade unbound | Oct 4, 2019 | Oct 3, 2019 |
| Huawei Euleros 2_0_sp8 | — | Upgrade unbound-libsUpgrade python2-unboundUpgrade unboundUpgrade python3-unbound | Aug 31, 2020 | Oct 3, 2019 |
| Huawei Euleros 2_0_sp9 | — | Upgrade unbound-libsUpgrade unboundUpgrade python3-unbound | Nov 3, 2020 | Oct 3, 2019 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Oct 3, 2019 |
| Ubuntu | — | Upgrade unboundUpgrade libunbound8 | Oct 9, 2019 | Oct 3, 2019 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Oct 3, 2019 |
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