Crash when handling long CNAME response in net
When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.
01
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-33811US | high7.5 | — | ||
When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash. | ||||
02
references
External citations — patches, advisories, analysis.
- https://access.redhat.com/errata/RHSA-2026:22112WEB
- https://access.redhat.com/errata/RHSA-2026:22120WEB
- https://access.redhat.com/errata/RHSA-2026:22121WEB
- https://access.redhat.com/errata/RHSA-2026:23262WEB
- https://access.redhat.com/errata/RHSA-2026:23264WEB
- https://access.redhat.com/errata/RHSA-2026:33120WEB
- https://access.redhat.com/errata/RHSA-2026:33123WEB
- https://access.redhat.com/errata/RHSA-2026:33142WEB
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