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When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.

High CVSS 7.5
CVECVE-2026-33811
First seen2026-07-15 14:30 UTC
Disclosed2026-05-07 20:16 UTC
Last updated2026-09-15 18:15 UTC
Channel statusauto

Summary

When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.

In-depth triage · Auto channel

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Affected products

  • :

Sources

  • NVD DATABASE

Original Links

Timeline

  1. nvd_ingest NVD