| Name | CVE-2026-10822 |
| Description | If BIND encounters a particular invalid data structure in a DNS record, it will accept the invalid data, and may subsequently abort and exit. BIND will first need to store a DNS record for a key (KEY, DNSKEY, etc.). That key must specify a PRIVATEDNS algorithm (253), and in the algorithm identifier, improperly give a length longer than the actual identifier data. The invalid identifier will be stored. If BIND later needs to render that record to text, it will use the invalid length during processing, leading to a consistency check failing. This issue affects BIND 9 versions 9.18.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.18.11-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 | DSA-6395-1 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| bind9 (PTS) | 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 | 1:9.20.27-1 | fixed | |
| sid | 1:9.20.27-2 | 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 | (not affected) | |||
| bind9 | source | bookworm | 1:9.18.49-1~deb12u2 | |||
| bind9 | source | trixie | 1:9.20.26-1~deb13u1 | DSA-6395-1 | ||
| bind9 | source | (unstable) | 1:9.20.26-1 |
[bullseye] - bind9 <not-affected> (Vulnerable code not present)
https://kb.isc.org/docs/cve-2026-10822
https://gitlab.isc.org/isc-projects/bind9/-/commit/d413c9ac2e29a728531354a69c8c8234c01b7d1e (9.18-branch)
https://gitlab.isc.org/isc-projects/bind9/-/commit/a5f1a9d0d2ec021618924b14202ac96ead8299c1 (9.18-branch)
https://gitlab.isc.org/isc-projects/bind9/-/commit/e73b70a64453e7d97a11cb5f0afe8bb02d34aaf8 (9.18-branch)
https://gitlab.isc.org/isc-projects/bind9/-/commit/19ac8b8e46aeb0a15e217bc7bdf485b31b87d9b4 (9.18-branch)
https://gitlab.isc.org/isc-projects/bind9/-/commit/8e066d3fc369e3346f22bb5cfb67a7ab08a74034 (9.18-branch)