AZL-109824

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Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-109824.json
JSON Data
https://api.osv.dev/v1/vulns/AZL-109824
Upstream
  • CVE-2026-97206
Published
2026-10-21T09:17:08Z
Modified
2026-10-22T14:18:32Z
Summary
CVE-2026-97206 affecting package unbound 1.26.1-1
Details

NLnet Labs Unbound, 1.22.0 up to and including version 1.26.1, contains a DNS-over-QUIC (DoQ) lifetime bug reachable by a remote DoQ client under multi-threaded operation. A client-triggered QUIC path migration can enter stream/connection cleanup while a mesh reply still retains a pointer to the DoQ stream. Cleanup frees the DoQ stream and when the pending mesh reply later completes it dereferences a stale pointer leading to a crash.

References

Affected packages

Azure Linux:3 / unbound

Package

Name
unbound
Purl
pkg:rpm/azure-linux/unbound

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Last Affected
1.26.1-1

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-109824.json"