# libc-ares2 security updates

Patch Radar has 20 security fixes for libc-ares2, closing 11 CVEs. The newest is libc-ares2 1.14.0-1ubuntu0.2+esm3 (1.14.0-1ubuntu0.2+esm3), released September 18, 2026.

- Web page: https://patchblox.com/security/product/linux/libc-ares2
- Platform: Linux
- Supported: yes

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [libc-ares2 1.14.0-1ubuntu0.2+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libc-ares2-1.14.0-1ubuntu0.2-esm3.md) | Sep 18, 2026 | Ubuntu 18.04.6 LTS (bionic) 1.14.0-1ubuntu0.2+esm3 | High | 2 | 0 |
| [libc-ares2 1.34.6-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libc-ares2-1.34.6-1ubuntu0.2.md) | Sep 18, 2026 | Ubuntu 26.04.1 LTS (resolute) 1.34.6-1ubuntu0.2 | High | 2 | 0 |
| [libc-ares2 1.15.0-1ubuntu0.5+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libc-ares2-1.15.0-1ubuntu0.5-esm1.md) | Sep 18, 2026 | Ubuntu 20.04 LTS (focal) 1.15.0-1ubuntu0.5+esm1 | High | 1 | 0 |
| [libc-ares2 1.18.1-1ubuntu0.22.04.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libc-ares2-1.18.1-1ubuntu0.22.04.4.md) | Sep 18, 2026 | Ubuntu 22.04.1 LTS (jammy) 1.18.1-1ubuntu0.22.04.4 | High | 1 | 0 |
| [libc-ares2 1.34.6-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libc-ares2-1.34.6-1ubuntu0.1.md) | Sep 3, 2026 | Ubuntu 26.04.1 LTS (resolute) 1.34.6-1ubuntu0.1 | High | 1 | 0 |
| [libc-ares2 1.34.4-2.1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libc-ares2-1.34.4-2.1ubuntu0.1.md) | Jan 16, 2026 | Ubuntu 25.04 (plucky) 1.34.4-2.1ubuntu0.1 | High | 1 | 0 |
| [libc-ares2 1.34.5-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libc-ares2-1.34.5-1ubuntu0.1.md) | Dec 8, 2025 | Ubuntu 25.10 (questing) 1.34.5-1ubuntu0.1 | Routine | 1 | 0 |
| [libc-ares2 1.14.0-1ubuntu0.2+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libc-ares2-1.14.0-1ubuntu0.2-esm2.md) | Feb 23, 2024 | Ubuntu 18.04.6 LTS (bionic) 1.14.0-1ubuntu0.2+esm2 | High | 1 | 0 |
| [libc-ares2 1.15.0-1ubuntu0.5](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libc-ares2-1.15.0-1ubuntu0.5.md) | Feb 23, 2024 | Ubuntu 20.04 LTS (focal) 1.15.0-1ubuntu0.5 | High | 1 | 0 |
| [libc-ares2 1.18.1-1ubuntu0.22.04.3](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libc-ares2-1.18.1-1ubuntu0.22.04.3.md) | Feb 23, 2024 | Ubuntu 22.04.1 LTS (jammy) 1.18.1-1ubuntu0.22.04.3 | High | 1 | 0 |
| [libc-ares2 1.15.0-1ubuntu0.4](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libc-ares2-1.15.0-1ubuntu0.4.md) | Aug 22, 2023 | Ubuntu 20.04 LTS (focal) 1.15.0-1ubuntu0.4 | Routine | 1 | 0 |
| [libc-ares2 1.14.0-1ubuntu0.2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libc-ares2-1.14.0-1ubuntu0.2-esm1.md) | May 25, 2023 | Ubuntu 18.04.6 LTS (bionic) 1.14.0-1ubuntu0.2+esm1 | High | 2 | 0 |
| [libc-ares2 1.15.0-1ubuntu0.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libc-ares2-1.15.0-1ubuntu0.3.md) | May 25, 2023 | Ubuntu 20.04 LTS (focal) 1.15.0-1ubuntu0.3 | High | 2 | 0 |
| [libc-ares2 1.18.1-1ubuntu0.22.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libc-ares2-1.18.1-1ubuntu0.22.04.2.md) | May 25, 2023 | Ubuntu 22.04.1 LTS (jammy) 1.18.1-1ubuntu0.22.04.2 | High | 2 | 0 |
| [libc-ares2 1.14.0-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libc-ares2-1.14.0-1ubuntu0.2.md) | Feb 14, 2023 | Ubuntu 18.04.6 LTS (bionic) 1.14.0-1ubuntu0.2 | High | 1 | 0 |
| [libc-ares2 1.15.0-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libc-ares2-1.15.0-1ubuntu0.2.md) | Feb 14, 2023 | Ubuntu 20.04 LTS (focal) 1.15.0-1ubuntu0.2 | High | 1 | 0 |
| [libc-ares2 1.18.1-1ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libc-ares2-1.18.1-1ubuntu0.22.04.1.md) | Feb 14, 2023 | Ubuntu 22.04.1 LTS (jammy) 1.18.1-1ubuntu0.22.04.1 | High | 1 | 0 |
| [libc-ares2 1.14.0-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libc-ares2-1.14.0-1ubuntu0.1.md) | Aug 9, 2021 | Ubuntu 18.04.6 LTS (bionic) 1.14.0-1ubuntu0.1 | Routine | 1 | 0 |
| [libc-ares2 1.15.0-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libc-ares2-1.15.0-1ubuntu0.1.md) | Aug 9, 2021 | Ubuntu 20.04 LTS (focal) 1.15.0-1ubuntu0.1 | Routine | 1 | 0 |
| [libc-ares2 1.17.1-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libc-ares2-1.17.1-1ubuntu1.md) | Aug 9, 2021 | Ubuntu 22.04.1 LTS (jammy) 1.17.1-1ubuntu1 | Routine | 1 | 0 |

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Data as of 2026-11-07T06:34:28Z 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