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

Fri, 08 May 2026 20:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-415

Fri, 08 May 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 07 May 2026 21:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-415

Thu, 07 May 2026 20:00:00 +0000

Type Values Removed Values Added
Description When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.
Title Crash when handling long CNAME response in net
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Go

Published: 2026-05-07T19:41:19.285Z

Updated: 2026-05-08T14:25:43.896Z

Reserved: 2026-03-23T20:35:32.814Z

Link: CVE-2026-33811

cve-icon Vulnrichment

Updated: 2026-05-08T14:25:36.174Z

cve-icon NVD

Status : Undergoing Analysis

Published: 2026-05-07T20:16:42.770

Modified: 2026-05-08T15:16:36.640

Link: CVE-2026-33811

cve-icon Redhat

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