# openjdk-21-testsupport security updates

Patch Radar has 42 security fixes for openjdk-21-testsupport, closing 44 CVEs. The newest is openjdk-21-testsupport 21.0.12+8-1~20.04 (21.0.12+8-1~20.04), released July 21, 2026.

- Web page: https://patchblox.com/security/product/linux/openjdk-21-testsupport
- Platform: Linux
- Supported: yes

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [openjdk-21-testsupport 21.0.12+8-1~20.04](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openjdk-21-testsupport-21.0.12-8-1-20.04.md) | Jul 21, 2026 | Ubuntu 20.04 LTS (focal) 21.0.12+8-1~20.04 | High | 8 | 0 |
| [openjdk-21-testsupport 21.0.12+8-1~22.04](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openjdk-21-testsupport-21.0.12-8-1-22.04.md) | Jul 21, 2026 | Ubuntu 22.04.1 LTS (jammy) 21.0.12+8-1~22.04 | High | 8 | 0 |
| [openjdk-21-testsupport 21.0.12+8-1~24.04](https://patchblox.com/security/data/fix/linux/ubuntu-noble-openjdk-21-testsupport-21.0.12-8-1-24.04.md) | Jul 21, 2026 | Ubuntu 24.04.5 LTS (noble) 21.0.12+8-1~24.04 | High | 8 | 0 |
| [openjdk-21-testsupport 21.0.12+8-1~26.04](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-openjdk-21-testsupport-21.0.12-8-1-26.04.md) | Jul 21, 2026 | Ubuntu 26.04.1 LTS (resolute) 21.0.12+8-1~26.04 | High | 8 | 0 |
| [openjdk-21-testsupport 21.0.11+10-1~20.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openjdk-21-testsupport-21.0.11-10-1-20.04.2.md) | Apr 21, 2026 | Ubuntu 20.04 LTS (focal) 21.0.11+10-1~20.04.2 | High | 8 | 0 |
| [openjdk-21-testsupport 21.0.11+10-1~22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openjdk-21-testsupport-21.0.11-10-1-22.04.2.md) | Apr 21, 2026 | Ubuntu 22.04.1 LTS (jammy) 21.0.11+10-1~22.04.2 | High | 8 | 0 |
| [openjdk-21-testsupport 21.0.11+10-1~24.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-openjdk-21-testsupport-21.0.11-10-1-24.04.2.md) | Apr 21, 2026 | Ubuntu 24.04.5 LTS (noble) 21.0.11+10-1~24.04.2 | High | 8 | 0 |
| [openjdk-21-testsupport 21.0.11+10-1~25.10.2](https://patchblox.com/security/data/fix/linux/ubuntu-questing-openjdk-21-testsupport-21.0.11-10-1-25.10.2.md) | Apr 21, 2026 | Ubuntu 25.10 (questing) 21.0.11+10-1~25.10.2 | High | 8 | 0 |
| [openjdk-21-testsupport 21.0.11+10-1~26.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-openjdk-21-testsupport-21.0.11-10-1-26.04.2.md) | Apr 21, 2026 | Ubuntu 26.04.1 LTS (resolute) 21.0.11+10-1~26.04.2 | High | 8 | 0 |
| [openjdk-21-testsupport 21.0.10+7-1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-openjdk-21-testsupport-21.0.10-7-1.md) | Jan 20, 2026 | Ubuntu 26.04.1 LTS (resolute) 21.0.10+7-1 | High | 4 | 0 |
| [openjdk-21-testsupport 21.0.10+7-1~20.04](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openjdk-21-testsupport-21.0.10-7-1-20.04.md) | Jan 20, 2026 | Ubuntu 20.04 LTS (focal) 21.0.10+7-1~20.04 | High | 4 | 0 |
| [openjdk-21-testsupport 21.0.10+7-1~22.04](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openjdk-21-testsupport-21.0.10-7-1-22.04.md) | Jan 20, 2026 | Ubuntu 22.04.1 LTS (jammy) 21.0.10+7-1~22.04 | High | 4 | 0 |
| [openjdk-21-testsupport 21.0.10+7-1~24.04](https://patchblox.com/security/data/fix/linux/ubuntu-noble-openjdk-21-testsupport-21.0.10-7-1-24.04.md) | Jan 20, 2026 | Ubuntu 24.04.5 LTS (noble) 21.0.10+7-1~24.04 | High | 4 | 0 |
| [openjdk-21-testsupport 21.0.10+7-1~25.10](https://patchblox.com/security/data/fix/linux/ubuntu-questing-openjdk-21-testsupport-21.0.10-7-1-25.10.md) | Jan 20, 2026 | Ubuntu 25.10 (questing) 21.0.10+7-1~25.10 | High | 4 | 0 |
| [openjdk-21-testsupport 21.0.8+9~us1-0ubuntu1~25.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-openjdk-21-testsupport-21.0.8-9-us1-0ubuntu1-25.04.1.md) | Jan 16, 2026 | Ubuntu 25.04 (plucky) 21.0.8+9~us1-0ubuntu1~25.04.1 | High | 4 | 0 |
| [openjdk-21-testsupport 21.0.9+10-1~25.04](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-openjdk-21-testsupport-21.0.9-10-1-25.04.md) | Jan 16, 2026 | Ubuntu 25.04 (plucky) 21.0.9+10-1~25.04 | High | 3 | 0 |
| [openjdk-21-testsupport 21.0.7+6~us1-0ubuntu1~25.04](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-openjdk-21-testsupport-21.0.7-6-us1-0ubuntu1-25.04.md) | Jan 16, 2026 | Ubuntu 25.04 (plucky) 21.0.7+6~us1-0ubuntu1~25.04 | High | 3 | 0 |
| [openjdk-21-testsupport 21.0.7+6~us1-0ubuntu1~24.10](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-openjdk-21-testsupport-21.0.7-6-us1-0ubuntu1-24.10.md) | Jan 16, 2026 | Ubuntu 24.10 (oracular) 21.0.7+6~us1-0ubuntu1~24.10 | High | 3 | 0 |
| [openjdk-21-testsupport 21.0.5+11-1ubuntu1~24.10](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-openjdk-21-testsupport-21.0.5-11-1ubuntu1-24.10.md) | Jan 16, 2026 | Ubuntu 24.10 (oracular) 21.0.5+11-1ubuntu1~24.10 | Routine | 4 | 0 |
| [openjdk-21-testsupport 21.0.6+7-1~24.10.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-openjdk-21-testsupport-21.0.6-7-1-24.10.1.md) | Jan 16, 2026 | Ubuntu 24.10 (oracular) 21.0.6+7-1~24.10.1 | Routine | 1 | 0 |
| [openjdk-21-testsupport 21.0.9+10-1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-openjdk-21-testsupport-21.0.9-10-1.md) | Oct 21, 2025 | Ubuntu 26.04.1 LTS (resolute) 21.0.9+10-1 | High | 3 | 0 |
| [openjdk-21-testsupport 21.0.9+10-1~20.04](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openjdk-21-testsupport-21.0.9-10-1-20.04.md) | Oct 21, 2025 | Ubuntu 20.04 LTS (focal) 21.0.9+10-1~20.04 | High | 3 | 0 |
| [openjdk-21-testsupport 21.0.9+10-1~22.04](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openjdk-21-testsupport-21.0.9-10-1-22.04.md) | Oct 21, 2025 | Ubuntu 22.04.1 LTS (jammy) 21.0.9+10-1~22.04 | High | 3 | 0 |
| [openjdk-21-testsupport 21.0.9+10-1~24.04](https://patchblox.com/security/data/fix/linux/ubuntu-noble-openjdk-21-testsupport-21.0.9-10-1-24.04.md) | Oct 21, 2025 | Ubuntu 24.04.5 LTS (noble) 21.0.9+10-1~24.04 | High | 3 | 0 |
| [openjdk-21-testsupport 21.0.9+10-1~25.10](https://patchblox.com/security/data/fix/linux/ubuntu-questing-openjdk-21-testsupport-21.0.9-10-1-25.10.md) | Oct 21, 2025 | Ubuntu 25.10 (questing) 21.0.9+10-1~25.10 | High | 3 | 0 |
| [openjdk-21-testsupport 21.0.8+9-1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-openjdk-21-testsupport-21.0.8-9-1.md) | Jul 15, 2025 | Ubuntu 25.10 (questing) 21.0.8+9-1 | High | 4 | 0 |
| [openjdk-21-testsupport 21.0.8+9~us1-0ubuntu1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openjdk-21-testsupport-21.0.8-9-us1-0ubuntu1-22.04.1.md) | Jul 15, 2025 | Ubuntu 22.04.1 LTS (jammy) 21.0.8+9~us1-0ubuntu1~22.04.1 | High | 4 | 0 |
| [openjdk-21-testsupport 21.0.8+9~us1-0ubuntu1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-openjdk-21-testsupport-21.0.8-9-us1-0ubuntu1-24.04.1.md) | Jul 15, 2025 | Ubuntu 24.04.5 LTS (noble) 21.0.8+9~us1-0ubuntu1~24.04.1 | High | 4 | 0 |
| [openjdk-21-testsupport 21.0.7+6~us1-0ubuntu1~20.04](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openjdk-21-testsupport-21.0.7-6-us1-0ubuntu1-20.04.md) | Apr 15, 2025 | Ubuntu 20.04 LTS (focal) 21.0.7+6~us1-0ubuntu1~20.04 | High | 3 | 0 |
| [openjdk-21-testsupport 21.0.7+6~us1-0ubuntu1~22.04](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openjdk-21-testsupport-21.0.7-6-us1-0ubuntu1-22.04.md) | Apr 15, 2025 | Ubuntu 22.04.1 LTS (jammy) 21.0.7+6~us1-0ubuntu1~22.04 | High | 3 | 0 |
| [openjdk-21-testsupport 21.0.7+6~us1-0ubuntu1~24.04](https://patchblox.com/security/data/fix/linux/ubuntu-noble-openjdk-21-testsupport-21.0.7-6-us1-0ubuntu1-24.04.md) | Apr 15, 2025 | Ubuntu 24.04.5 LTS (noble) 21.0.7+6~us1-0ubuntu1~24.04 | High | 3 | 0 |
| [openjdk-21-testsupport 21.0.6+7-1~20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openjdk-21-testsupport-21.0.6-7-1-20.04.1.md) | Jan 21, 2025 | Ubuntu 20.04 LTS (focal) 21.0.6+7-1~20.04.1 | Routine | 1 | 0 |
| [openjdk-21-testsupport 21.0.6+7-1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openjdk-21-testsupport-21.0.6-7-1-22.04.1.md) | Jan 21, 2025 | Ubuntu 22.04.1 LTS (jammy) 21.0.6+7-1~22.04.1 | Routine | 1 | 0 |
| [openjdk-21-testsupport 21.0.6+7-1~24.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-openjdk-21-testsupport-21.0.6-7-1-24.04.1.md) | Jan 21, 2025 | Ubuntu 24.04.5 LTS (noble) 21.0.6+7-1~24.04.1 | Routine | 1 | 0 |
| [openjdk-21-testsupport 21.0.5+11-1ubuntu1~20.04](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openjdk-21-testsupport-21.0.5-11-1ubuntu1-20.04.md) | Oct 15, 2024 | Ubuntu 20.04 LTS (focal) 21.0.5+11-1ubuntu1~20.04 | Routine | 4 | 0 |
| [openjdk-21-testsupport 21.0.5+11-1ubuntu1~22.04](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openjdk-21-testsupport-21.0.5-11-1ubuntu1-22.04.md) | Oct 15, 2024 | Ubuntu 22.04.1 LTS (jammy) 21.0.5+11-1ubuntu1~22.04 | Routine | 4 | 0 |
| [openjdk-21-testsupport 21.0.5+11-1ubuntu1~24.04](https://patchblox.com/security/data/fix/linux/ubuntu-noble-openjdk-21-testsupport-21.0.5-11-1ubuntu1-24.04.md) | Oct 15, 2024 | Ubuntu 24.04.5 LTS (noble) 21.0.5+11-1ubuntu1~24.04 | Routine | 4 | 0 |
| [openjdk-21-testsupport 21.0.4+7-1ubuntu2~20.04](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openjdk-21-testsupport-21.0.4-7-1ubuntu2-20.04.md) | Jul 30, 2024 | Ubuntu 20.04 LTS (focal) 21.0.4+7-1ubuntu2~20.04 | High | 5 | 0 |
| [openjdk-21-testsupport 21.0.4+7-1ubuntu2~22.04](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openjdk-21-testsupport-21.0.4-7-1ubuntu2-22.04.md) | Jul 30, 2024 | Ubuntu 22.04.1 LTS (jammy) 21.0.4+7-1ubuntu2~22.04 | High | 5 | 0 |
| [openjdk-21-testsupport 21.0.4+7-1ubuntu2~24.04](https://patchblox.com/security/data/fix/linux/ubuntu-noble-openjdk-21-testsupport-21.0.4-7-1ubuntu2-24.04.md) | Jul 30, 2024 | Ubuntu 24.04.5 LTS (noble) 21.0.4+7-1ubuntu2~24.04 | High | 5 | 0 |
| [openjdk-21-testsupport 21.0.3+9-1ubuntu1~20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openjdk-21-testsupport-21.0.3-9-1ubuntu1-20.04.1.md) | Apr 16, 2024 | Ubuntu 20.04 LTS (focal) 21.0.3+9-1ubuntu1~20.04.1 | Routine | 4 | 0 |
| [openjdk-21-testsupport 21.0.3+9-1ubuntu1~22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-openjdk-21-testsupport-21.0.3-9-1ubuntu1-22.04.1.md) | Apr 16, 2024 | Ubuntu 22.04.1 LTS (jammy) 21.0.3+9-1ubuntu1~22.04.1 | Routine | 4 | 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