# systemd-userdbd security updates

Patch Radar has 15 security fixes for systemd-userdbd, closing 10 CVEs. The newest security fix is systemd-userdbd 255.4-1ubuntu8.17, released August 11, 2026.

- Web page: https://patchblox.com/security/product/linux/systemd-userdbd
- Platform: Linux
- Supported: yes

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [systemd-userdbd 255.4-1ubuntu8.17](https://patchblox.com/security/data/fix/linux/ubuntu-noble-systemd-userdbd-255.4-1ubuntu8.17.md) | Aug 11, 2026 | Ubuntu 24.04.5 LTS (noble) 255.4-1ubuntu8.17 | Routine | 2 | 0 |
| [systemd-userdbd 259.5-0ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-systemd-userdbd-259.5-0ubuntu3.4.md) | Aug 9, 2026 | Ubuntu 26.04.1 LTS (resolute) 259.5-0ubuntu3.4 | Routine | 3 | 0 |
| [systemd-userdbd 257.9-0ubuntu2.3](https://patchblox.com/security/data/fix/linux/ubuntu-questing-systemd-userdbd-257.9-0ubuntu2.3.md) | Apr 15, 2026 | Ubuntu 25.10 (questing) 257.9-0ubuntu2.3 | High | 2 | 0 |
| [systemd-userdbd 255.4-1ubuntu8.14](https://patchblox.com/security/data/fix/linux/ubuntu-noble-systemd-userdbd-255.4-1ubuntu8.14.md) | Apr 15, 2026 | Ubuntu 24.04.5 LTS (noble) 255.4-1ubuntu8.14 | High | 2 | 0 |
| [systemd-userdbd 255.4-1ubuntu8.16](https://patchblox.com/security/data/fix/linux/ubuntu-noble-systemd-userdbd-255.4-1ubuntu8.16.md) | Apr 10, 2026 | Ubuntu 24.04.5 LTS (noble) 255.4-1ubuntu8.16 | Routine | 1 | 0 |
| [systemd-userdbd 257.9-0ubuntu2.5](https://patchblox.com/security/data/fix/linux/ubuntu-questing-systemd-userdbd-257.9-0ubuntu2.5.md) | Apr 10, 2026 | Ubuntu 25.10 (questing) 257.9-0ubuntu2.5 | Routine | 1 | 0 |
| [systemd-userdbd 257.4-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-systemd-userdbd-257.4-1ubuntu3.1.md) | Jan 16, 2026 | Ubuntu 25.04 (plucky) 257.4-1ubuntu3.1 | Routine | 1 | 0 |
| [systemd-userdbd 244.1-0ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-systemd-userdbd-244.1-0ubuntu3.md) | Jan 16, 2026 | Ubuntu 25.04 (plucky) 244.1-0ubuntu3 | High | 1 | 0 |
| [systemd-userdbd 248.3-1ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-systemd-userdbd-248.3-1ubuntu3.md) | Jan 16, 2026 | Ubuntu 25.04 (plucky) 248.3-1ubuntu3 | Routine | 1 | 0 |
| [systemd-userdbd 256.5-2ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-systemd-userdbd-256.5-2ubuntu3.3.md) | Jan 16, 2026 | Ubuntu 24.10 (oracular) 256.5-2ubuntu3.3 | Routine | 1 | 0 |
| [systemd-userdbd 255.2-3ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-systemd-userdbd-255.2-3ubuntu1.md) | Jan 16, 2026 | Ubuntu 25.04 (plucky) 255.2-3ubuntu1 | Routine | 1 | 0 |
| [systemd-userdbd 255.2-3ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-systemd-userdbd-255.2-3ubuntu1.md) | Jan 16, 2026 | Ubuntu 24.10 (oracular) 255.2-3ubuntu1 | Routine | 1 | 0 |
| [systemd-userdbd 244.1-0ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-systemd-userdbd-244.1-0ubuntu3.md) | Jan 16, 2026 | Ubuntu 24.10 (oracular) 244.1-0ubuntu3 | High | 1 | 0 |
| [systemd-userdbd 248.3-1ubuntu3](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-systemd-userdbd-248.3-1ubuntu3.md) | Jan 16, 2026 | Ubuntu 24.10 (oracular) 248.3-1ubuntu3 | Routine | 1 | 0 |
| [systemd-userdbd 255.4-1ubuntu8.8](https://patchblox.com/security/data/fix/linux/ubuntu-noble-systemd-userdbd-255.4-1ubuntu8.8.md) | May 30, 2025 | Ubuntu 24.04.5 LTS (noble) 255.4-1ubuntu8.8 | Routine | 1 | 0 |

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Data as of 2026-11-07T12:40:37Z 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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