# CVE-2025-11232: kea: To trigger the issue, three configuration parameters must have specific settings: "hostname-char-set" must be left at...

CVE-2025-11232 is fixed in 5 products on 1 platform, first by RHSA-2025:21038, released October 29, 2025. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2025-11232
- Priority: High
- CVSS: 7.5 (important)
- EPSS: 0.0042
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 29, 2025

## Description

To trigger the issue, three configuration parameters must have specific settings: "hostname-char-set" must be left at the default setting, which is "[^A-Za-z0-9.-]"; "hostname-char-replacement" must be empty (the default); and "ddns-qualifying-suffix" must *NOT* be empty (the default is empty). DDNS updates do not need to be enabled for this issue to manifest. A client that sends certain option content would then cause kea-dhcp4 to exit unexpectedly. This issue affects Kea versions 3.0.1 through 3.0.1 and 3.1.1 through 3.1.2.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | kea RHEL 10 | 3.0.1-2.el10_1 | [RHSA-2025:21038](https://patchblox.com/security/data/fix/linux/rhsa-2025-21038.md) | Oct 29, 2025 |
| Linux | kea ol 10 | 0:3.0.1-2.el10_1 | [ELSA-2025-21038](https://patchblox.com/security/data/fix/linux/elsa-2025-21038.md) | Dec 2, 2025 |
| Linux | kea opensuse-leap 16.0 | 3.0.3-160000.1.1 | [OPENSUSE-SU-2026:20452-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20452-1.md) | Apr 1, 2026 |
| Linux | kea rocky 10 | 0:3.0.1-2.el10_1 | [RLSA-2025:21038](https://patchblox.com/security/data/fix/linux/rlsa-2025-21038.md) | Nov 21, 2025 |
| Linux | kea sles 16.0 | 3.0.3-160000.1.1 | [SUSE-SU-2026:20989-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20989-1.md) | Apr 1, 2026 |
| Linux | kea-doc almalinux 10 | 3.0.1-2.el10_1 | [ALSA-2025:21038](https://patchblox.com/security/data/fix/linux/alsa-2025-21038.md) | Nov 11, 2025 |
| Linux | kea-doc ol 10 | 0:3.0.1-2.el10_1 | [ELSA-2025-21038](https://patchblox.com/security/data/fix/linux/elsa-2025-21038.md) | Dec 2, 2025 |
| Linux | kea-hooks ol 10 | 0:3.0.1-2.el10_1 | [ELSA-2025-21038](https://patchblox.com/security/data/fix/linux/elsa-2025-21038.md) | Dec 2, 2025 |
| Linux | kea-keama ol 10 | 0:3.0.1-2.el10_1 | [ELSA-2025-21038](https://patchblox.com/security/data/fix/linux/elsa-2025-21038.md) | Dec 2, 2025 |
| Linux | kea-libs ol 10 | 0:3.0.1-2.el10_1 | [ELSA-2025-21038](https://patchblox.com/security/data/fix/linux/elsa-2025-21038.md) | Dec 2, 2025 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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