CVE-2025-40779 (GCVE-0-2025-40779)
Vulnerability from cvelistv5
Published
2025-08-27 20:23
Modified
2025-11-04 21:10
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Summary
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
Impacted products
Vendor Product Version
ISC Kea Version: 2.7.1   <
Version: 3.0.0
Version: 3.1.0
Patch: 2.6.0
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