# libklibc security updates

Patch Radar has 14 security fixes for libklibc, closing 9 CVEs. The newest is libklibc 2.0.13-4ubuntu1 (2.0.13-4ubuntu1), released January 16, 2026.

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

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [libklibc 2.0.13-4ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libklibc-2.0.13-4ubuntu1.md) | Jan 16, 2026 | Ubuntu 25.04 (plucky) 2.0.13-4ubuntu1 | High | 2 | 0 |
| [libklibc 2.0.13-4ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libklibc-2.0.13-4ubuntu1.md) | Jan 16, 2026 | Ubuntu 24.10 (oracular) 2.0.13-4ubuntu1 | High | 2 | 0 |
| [libklibc 2.0.10-4ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libklibc-2.0.10-4ubuntu0.1.md) | Aug 5, 2022 | Ubuntu 22.04.1 LTS (jammy) 2.0.10-4ubuntu0.1 | High | 4 | 0 |
| [libklibc 2.0.13-4ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libklibc-2.0.13-4ubuntu0.1.md) | Aug 5, 2022 | Ubuntu 24.04.5 LTS (noble) 2.0.13-4ubuntu0.1 | High | 4 | 0 |
| [libklibc 2.0.4-9ubuntu2.2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libklibc-2.0.4-9ubuntu2.2-esm1.md) | Aug 5, 2022 | Ubuntu 18.04.6 LTS (bionic) 2.0.4-9ubuntu2.2+esm1 | High | 4 | 0 |
| [libklibc 2.0.7-1ubuntu5.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libklibc-2.0.7-1ubuntu5.2.md) | Aug 5, 2022 | Ubuntu 20.04 LTS (focal) 2.0.7-1ubuntu5.2 | High | 4 | 0 |
| [libklibc 2.0.4-9ubuntu2.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libklibc-2.0.4-9ubuntu2.1.md) | Apr 29, 2021 | Ubuntu 18.04.6 LTS (bionic) 2.0.4-9ubuntu2.1 | Routine | 4 | 0 |
| [libklibc 2.0.7-1ubuntu5.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libklibc-2.0.7-1ubuntu5.1.md) | Apr 29, 2021 | Ubuntu 20.04 LTS (focal) 2.0.7-1ubuntu5.1 | Routine | 4 | 0 |
| [libklibc 2.0.13-4ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libklibc-2.0.13-4ubuntu1.md) | May 22, 2017 | Ubuntu 25.10 (questing) 2.0.13-4ubuntu1 | High | 2 | 0 |
| [libklibc 2.0.10-4ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libklibc-2.0.10-4ubuntu0.2.md) | May 22, 2017 | Ubuntu 22.04.1 LTS (jammy) 2.0.10-4ubuntu0.2 | High | 1 | 0 |
| [libklibc 2.0.13-4ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libklibc-2.0.13-4ubuntu0.2.md) | May 22, 2017 | Ubuntu 24.04.5 LTS (noble) 2.0.13-4ubuntu0.2 | High | 1 | 0 |
| [libklibc 2.0.14-1ubuntu1.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libklibc-2.0.14-1ubuntu1.1.md) | May 22, 2017 | Ubuntu 25.10 (questing) 2.0.14-1ubuntu1.1 | High | 1 | 0 |
| [libklibc 2.0.4-9ubuntu2.2+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libklibc-2.0.4-9ubuntu2.2-esm2.md) | May 22, 2017 | Ubuntu 18.04.6 LTS (bionic) 2.0.4-9ubuntu2.2+esm2 | High | 1 | 0 |
| [libklibc 2.0.7-1ubuntu5.2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libklibc-2.0.7-1ubuntu5.2-esm1.md) | May 22, 2017 | Ubuntu 20.04 LTS (focal) 2.0.7-1ubuntu5.2+esm1 | High | 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