When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.
Metrics
Affected Vendors & Products
References
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
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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 |
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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
Updated: 2026-05-08T14:25:36.174Z
Status : Undergoing Analysis
Published: 2026-05-07T20:16:42.770
Modified: 2026-05-08T15:16:36.640
Link: CVE-2026-33811
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