CVE-2025-40779

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Source
https://nvd.nist.gov/vuln/detail/CVE-2025-40779
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40779.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-40779
Downstream
Withdrawn
2025-08-28T21:55:54.925502Z
Published
2025-08-27T21:15:54Z
Modified
2025-08-27T23:10:05.285757Z
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

If a DHCPv4 client sends a request with some specific options, and Kea fails to find an appropriate subnet for the client, the kea-dhcp4 process will abort with an assertion failure. This happens only if the client request is unicast directly to Kea; broadcast messages do not cause the problem. This issue affects Kea versions 2.7.1 through 2.7.9, 3.0.0, and 3.1.0.

References

Affected packages

Debian:12 / isc-kea

Package

Name
isc-kea
Purl
pkg:deb/debian/isc-kea?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.2.0-6
2.2.0-7
2.2.0-8
2.2.1-1
2.2.1-2
2.2.1-3
2.4.0-1
2.4.1-1
2.4.1-2
2.4.1-3
2.6.1-1
2.6.1-2
2.6.3-1
2.6.3-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / isc-kea

Package

Name
isc-kea
Purl
pkg:deb/debian/isc-kea?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.6.3-1
2.6.3-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / isc-kea

Package

Name
isc-kea
Purl
pkg:deb/debian/isc-kea?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.6.3-1
2.6.3-2

Ecosystem specific 

{
    "urgency": "not yet assigned"
}