nsd: NSD from version 4.13.0 has a heap use-after-free bug in logging errors on TLS connections, causing a crash of the se...
CVE-2026-12245 is fixed in nsd on 1 platform, first by nsd 4.14.0-1ubuntu0.1~esm1, released June 24, 2026. It is not reported as exploited. Patch Radar priority: High.
NSD from version 4.13.0 has a heap use-after-free bug in logging errors on TLS connections, causing a crash of the server process, which can be triggered trivially by sending a DNS query over a DoT connection, and closing the connection without reading the response.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| nsd · Debian 14 | 4.14.3-1 | DEBIAN-CVE-2026-12245 | Jun 28, 2026 |
| nsd · Ubuntu 26.04.1 LTS (resolute) | 4.14.0-1ubuntu0.1~esm1 | nsd 4.14.0-1ubuntu0.1~esm1 | Jun 24, 2026 |
| nsd · opensuse-leap 16.0 | 4.14.3-bp160.1.1 | OPENSUSE-SU-2026:21502-1 | Jul 29, 2026 |
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