# zstd security updates

Patch Radar has 5 security fixes for zstd, closing 3 CVEs. The newest is zstd 1.4.8+dfsg-2build1 (1.4.8+dfsg-2build1), released January 16, 2026.

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

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [zstd 1.4.8+dfsg-2build1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-zstd-1.4.8-dfsg-2build1.md) | Jan 16, 2026 | Ubuntu 25.04 (plucky) 1.4.8+dfsg-2build1 | Routine | 1 | 0 |
| [zstd 1.4.8+dfsg-2build1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-zstd-1.4.8-dfsg-2build1.md) | Jan 16, 2026 | Ubuntu 24.10 (oracular) 1.4.8+dfsg-2build1 | Routine | 1 | 0 |
| [zstd 1.3.3+dfsg-2ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-zstd-1.3.3-dfsg-2ubuntu1.2.md) | Feb 19, 2021 | Ubuntu 18.04.6 LTS (bionic) 1.3.3+dfsg-2ubuntu1.2 | Routine | 2 | 0 |
| [zstd 1.4.4+dfsg-3ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-zstd-1.4.4-dfsg-3ubuntu0.1.md) | Feb 19, 2021 | Ubuntu 20.04 LTS (focal) 1.4.4+dfsg-3ubuntu0.1 | Routine | 2 | 0 |
| [zstd 1.3.3+dfsg-2ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-zstd-1.3.3-dfsg-2ubuntu1.1.md) | Jul 24, 2019 | Ubuntu 18.04.6 LTS (bionic) 1.3.3+dfsg-2ubuntu1.1 | Routine | 1 | 0 |

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Data as of 2026-11-07T00:32:44Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo