UBUNTU-CVE-2025-40779
- Source
- https://ubuntu.com/security/CVE-2025-40779
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-40779.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2025-40779
- Upstream
- Published
- 2025-08-28T00:00:00Z
- Modified
- 2025-08-28T20:01:03.182108Z
- 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
- Ubuntu - medium
- 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-dhcp4process 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
-
- https://ubuntu.com/security/CVE-2025-40779
- https://www.cve.org/CVERecord?id=CVE-2025-40779
- https://kb.isc.org/docs/cve-2025-40779
- https://gitlab.isc.org/isc-projects/kea/-/commit/0afd42b5dfb2e547b3c25023953892c1e578aba3
- https://gitlab.isc.org/isc-projects/kea/-/commit/b25d7e8a81273e4099bf6c7f639ed774de2f3d08
Affected packages
Ubuntu:Pro:16.04:LTS / isc-kea
Package
- Name
- isc-kea
- Purl
- pkg:deb/ubuntu/isc-kea@1.0.0-1build1?arch=source&distro=esm-apps/xenial
Ubuntu:Pro:18.04:LTS / isc-kea
Package
- Name
- isc-kea
- Purl
- pkg:deb/ubuntu/isc-kea@1.1.0-1build2?arch=source&distro=esm-apps/bionic
Ubuntu:Pro:20.04:LTS / isc-kea
Package
- Name
- isc-kea
- Purl
- pkg:deb/ubuntu/isc-kea@1.6.2-0ubuntu1?arch=source&distro=esm-apps/focal
Ubuntu:22.04:LTS / isc-kea
Package
- Name
- isc-kea
- Purl
- pkg:deb/ubuntu/isc-kea@2.0.2-1ubuntu0.1?arch=source&distro=jammy
Ubuntu:24.04:LTS / isc-kea
Package
- Name
- isc-kea
- Purl
- pkg:deb/ubuntu/isc-kea@2.4.1-3build3.1?arch=source&distro=noble