| Name | CVE-2026-13204 |
| Description | If a provably insecure domain is covered by both an NSEC and NSEC3 record at the parent, and there exist an RRSIG for only one of these types, then BIND may exit unexpectedly with an assertion while validating this proof. This issue affects BIND 9 versions 9.11.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.11.3-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-4725-1, DSA-6395-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| bind9 (PTS) | bullseye | 1:9.16.50-1~deb11u2 | vulnerable |
| bullseye (security) | 1:9.16.50-1~deb11u6 | fixed | |
| bookworm | 1:9.18.49-1~deb12u1 | vulnerable | |
| bookworm (security) | 1:9.18.49-1~deb12u2 | fixed | |
| trixie | 1:9.20.23-1~deb13u1 | vulnerable | |
| trixie (security) | 1:9.20.26-1~deb13u1 | fixed | |
| forky, sid | 1:9.20.26-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| bind9 | source | bullseye | 1:9.16.50-1~deb11u6 | DLA-4725-1 | ||
| bind9 | source | bookworm | 1:9.18.49-1~deb12u2 | DLA-4725-1 | ||
| bind9 | source | trixie | 1:9.20.26-1~deb13u1 | DSA-6395-1 | ||
| bind9 | source | (unstable) | 1:9.20.26-1 |
https://kb.isc.org/docs/cve-2026-13204
https://gitlab.isc.org/isc-projects/bind9/-/commit/1b90fbb4f9d3d923516ff7841171269b993cfd6f (9.16-branch)
https://gitlab.isc.org/isc-projects/bind9/-/commit/0cf010c153518f1f9831e201891ecba8d8ba65e1 (9.18-branch)
https://gitlab.isc.org/isc-projects/bind9/-/commit/6c0e599ea85c0c53a4af09742e64e193da089bb4 (9.18-branch)
https://gitlab.isc.org/isc-projects/bind9/-/commit/48f5aa5fb3746d6194edcc57e8792a8b3cc3b454 (9.18-branch)