NULL Pointer Dereference Affecting isc-projects/kea package, versions [,3.0.1)[3.1.0,3.1.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published29 Aug 2025
- disclosed27 Aug 2025
- creditJochen M., Martin Dinev, Ashwani Kumar, Bret Giddings, Florian Ritterhoff
Introduced: 27 Aug 2025
NewCVE-2025-40779 (opens in a new tab)How to fix?
Upgrade isc-projects/kea to version 3.0.1, 3.1.1 or higher.
Overview
Affected versions of this package are vulnerable to NULL Pointer Dereference while searching for an appropriate subnet for the DHCPv4 client. An attacker can cause the application to crash by sending specially crafted client options that trigger a null pointer dereference during subnet selection.
Note:
This happens only if the client request is unicast directly to Kea; broadcast messages do not cause the problem.