CVE-2026-12246
Publication date 25 June 2026
Last updated 26 June 2026
Ubuntu priority
Description
NSD version 4.14.0 introduced a bug where a specially crafted APL RR, with an adflength larger than permitted for the address family will overwrite the stack when the zone is written to disk, with a maximum of 111 attacker controlled bytes.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| nsd | 26.04 LTS resolute |
Fixed 4.14.0-1ubuntu0.1~esm1
|
| 25.10 questing |
Vulnerable
|
|
| 24.04 LTS noble |
Fixed 4.8.0-1ubuntu0.1~esm1
|
|
| 22.04 LTS jammy |
Fixed 4.3.9-1ubuntu0.1~esm1
|
|
| 20.04 LTS focal |
Fixed 4.1.26-1ubuntu0.1~esm1
|
|
| 18.04 LTS bionic |
Fixed 4.1.17-1ubuntu0.1~esm1
|
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CVSS version: CVSS v4.0
Base score
7.2 · High
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
References
Related Ubuntu Security Notices (USN)
- USN-8474-1
- NSD vulnerabilities
- 25 June 2026