DEBIAN-CVE-2026-97206

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Source

https://security-tracker.debian.org/tracker/CVE-2026-97206

Import Source

https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-97206.json

JSON Data

https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-97206

Upstream

CVE-2026-97206

Published

2026-10-21T09:17:08Z

Modified

2026-11-11T05:00:07Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

[none]

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

https://security-tracker.debian.org/tracker/CVE-2026-97206

Affected packages

Debian:13 / unbound

Package

Name: unbound
Purl: pkg:deb/debian/unbound?arch=source&distro=trixie

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1.26.2-0+deb13u1

Affected versions

1.*

1.22.0-2

1.22.0-2+deb13u1

1.22.0-2+deb13u2

1.22.0-2+deb13u3

1.23.1-1

1.24.0-1

1.24.0-2

1.24.1-1

1.24.1-2

1.24.2-1

1.25.0-1

1.25.1-1

1.25.2-1

1.26.0-1

1.26.0-2

1.26.1-0+deb13u1

1.26.1-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-97206.json"

Debian:14 / unbound