# lib64go21 security updates

Patch Radar has 4 security fixes for lib64go21, closing 2 CVEs. The newest security fix is lib64go21 12.4.0-2ubuntu1~24.04, released September 29, 2026.

- Web page: https://patchblox.com/security/product/linux/lib64go21
- Platform: Linux
- Supported: yes

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [lib64go21 12.4.0-2ubuntu1~24.04](https://patchblox.com/security/data/fix/linux/ubuntu-noble-lib64go21-12.4.0-2ubuntu1-24.04.md) | Sep 29, 2026 | Ubuntu 24.04.5 LTS (noble) 12.4.0-2ubuntu1~24.04 | High | 1 | 0 |
| [lib64go21 12.3.0-9ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-lib64go21-12.3.0-9ubuntu1.md) | Jan 16, 2026 | Ubuntu 25.04 (plucky) 12.3.0-9ubuntu1 | Routine | 1 | 0 |
| [lib64go21 12.3.0-9ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-lib64go21-12.3.0-9ubuntu1.md) | Jan 16, 2026 | Ubuntu 24.10 (oracular) 12.3.0-9ubuntu1 | Routine | 1 | 0 |
| [lib64go21 12.3.0-1ubuntu1~22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-lib64go21-12.3.0-1ubuntu1-22.04.2.md) | Sep 12, 2023 | Ubuntu 22.04.1 LTS (jammy) 12.3.0-1ubuntu1~22.04.2 | 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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