# libc6-dev-x32 security updates Patch Radar has 39 security fixes for libc6-dev-x32, closing 51 CVEs, 1 of which is being exploited. The newest security fix is libc6-dev-x32 2.39-0ubuntu8.9, released September 11, 2026. - Web page: https://patchblox.com/security/product/linux/libc6-dev-x32 - Platform: Linux - Supported: yes ## Security fixes, newest first | Fix | Released | Fixed in | Priority | CVEs | Exploited | |---|---|---|---|---:|---:| | [libc6-dev-x32 2.39-0ubuntu8.9](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libc6-dev-x32-2.39-0ubuntu8.9.md) | Sep 11, 2026 | Ubuntu 24.04.5 LTS (noble) 2.39-0ubuntu8.9 | High | 6 | 0 | | [libc6-dev-x32 2.35-0ubuntu3.15](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libc6-dev-x32-2.35-0ubuntu3.15.md) | Sep 10, 2026 | Ubuntu 22.04.1 LTS (jammy) 2.35-0ubuntu3.15 | Routine | 5 | 0 | | [libc6-dev-x32 2.43-2ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libc6-dev-x32-2.43-2ubuntu2.4.md) | Aug 30, 2026 | Ubuntu 26.04.1 LTS (resolute) 2.43-2ubuntu2.4 | High | 6 | 0 | | [libc6-dev-x32 2.39-0ubuntu8.8](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libc6-dev-x32-2.39-0ubuntu8.8.md) | Apr 28, 2026 | Ubuntu 24.04.5 LTS (noble) 2.39-0ubuntu8.8 | High | 7 | 0 | | [libc6-dev-x32 2.35-0ubuntu3.14](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libc6-dev-x32-2.35-0ubuntu3.14.md) | Apr 28, 2026 | Ubuntu 22.04.1 LTS (jammy) 2.35-0ubuntu3.14 | High | 5 | 0 | | [libc6-dev-x32 2.43-2ubuntu2.3](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libc6-dev-x32-2.43-2ubuntu2.3.md) | Apr 28, 2026 | Ubuntu 26.04.1 LTS (resolute) 2.43-2ubuntu2.3 | High | 5 | 0 | | [libc6-dev-x32 2.31-0ubuntu9.18+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libc6-dev-x32-2.31-0ubuntu9.18-esm1.md) | Jan 20, 2026 | Ubuntu 20.04 LTS (focal) 2.31-0ubuntu9.18+esm1 | High | 4 | 0 | | [libc6-dev-x32 2.27-3ubuntu1.6+esm6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libc6-dev-x32-2.27-3ubuntu1.6-esm6.md) | Jan 20, 2026 | Ubuntu 18.04.6 LTS (bionic) 2.27-3ubuntu1.6+esm6 | High | 3 | 0 | | [libc6-dev-x32 2.35-0ubuntu3.13](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libc6-dev-x32-2.35-0ubuntu3.13.md) | Jan 20, 2026 | Ubuntu 22.04.1 LTS (jammy) 2.35-0ubuntu3.13 | High | 3 | 0 | | [libc6-dev-x32 2.39-0ubuntu8.7](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libc6-dev-x32-2.39-0ubuntu8.7.md) | Jan 20, 2026 | Ubuntu 24.04.5 LTS (noble) 2.39-0ubuntu8.7 | High | 3 | 0 | | [libc6-dev-x32 2.42-0ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-questing-libc6-dev-x32-2.42-0ubuntu3.1.md) | Jan 20, 2026 | Ubuntu 25.10 (questing) 2.42-0ubuntu3.1 | High | 3 | 0 | | [libc6-dev-x32 2.42-2ubuntu5](https://patchblox.com/security/data/fix/linux/ubuntu-resolute-libc6-dev-x32-2.42-2ubuntu5.md) | Jan 20, 2026 | Ubuntu 26.04.1 LTS (resolute) 2.42-2ubuntu5 | High | 2 | 0 | | [libc6-dev-x32 2.35-0ubuntu3.11](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libc6-dev-x32-2.35-0ubuntu3.11.md) | Jul 23, 2025 | Ubuntu 22.04.1 LTS (jammy) 2.35-0ubuntu3.11 | Routine | 1 | 0 | | [libc6-dev-x32 2.39-0ubuntu8.6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libc6-dev-x32-2.39-0ubuntu8.6.md) | Jul 23, 2025 | Ubuntu 24.04.5 LTS (noble) 2.39-0ubuntu8.6 | Routine | 1 | 0 | | [libc6-dev-x32 2.39-0ubuntu8.5](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libc6-dev-x32-2.39-0ubuntu8.5.md) | Jun 5, 2025 | Ubuntu 24.04.5 LTS (noble) 2.39-0ubuntu8.5 | Routine | 1 | 0 | | [libc6-dev-x32 2.27-3ubuntu1.6+esm5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libc6-dev-x32-2.27-3ubuntu1.6-esm5.md) | May 16, 2025 | Ubuntu 18.04.6 LTS (bionic) 2.27-3ubuntu1.6+esm5 | High | 1 | 0 | | [libc6-dev-x32 2.31-0ubuntu9.18](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libc6-dev-x32-2.31-0ubuntu9.18.md) | May 16, 2025 | Ubuntu 20.04 LTS (focal) 2.31-0ubuntu9.18 | High | 1 | 0 | | [libc6-dev-x32 2.35-0ubuntu3.10](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libc6-dev-x32-2.35-0ubuntu3.10.md) | May 16, 2025 | Ubuntu 22.04.1 LTS (jammy) 2.35-0ubuntu3.10 | High | 1 | 0 | | [libc6-dev-x32 2.27-3ubuntu1.6+esm4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libc6-dev-x32-2.27-3ubuntu1.6-esm4.md) | Jan 22, 2025 | Ubuntu 18.04.6 LTS (bionic) 2.27-3ubuntu1.6+esm4 | Routine | 1 | 0 | | [libc6-dev-x32 2.31-0ubuntu9.17](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libc6-dev-x32-2.31-0ubuntu9.17.md) | Jan 22, 2025 | Ubuntu 20.04 LTS (focal) 2.31-0ubuntu9.17 | Routine | 1 | 0 | | [libc6-dev-x32 2.35-0ubuntu3.9](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libc6-dev-x32-2.35-0ubuntu3.9.md) | Jan 22, 2025 | Ubuntu 22.04.1 LTS (jammy) 2.35-0ubuntu3.9 | Routine | 1 | 0 | | [libc6-dev-x32 2.39-0ubuntu8.4](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libc6-dev-x32-2.39-0ubuntu8.4.md) | Jan 22, 2025 | Ubuntu 24.04.5 LTS (noble) 2.39-0ubuntu8.4 | Routine | 1 | 0 | | [libc6-dev-x32 2.27-3ubuntu1.6+esm3](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libc6-dev-x32-2.27-3ubuntu1.6-esm3.md) | May 6, 2024 | Ubuntu 18.04.6 LTS (bionic) 2.27-3ubuntu1.6+esm3 | High | 4 | 0 | | [libc6-dev-x32 2.31-0ubuntu9.16](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libc6-dev-x32-2.31-0ubuntu9.16.md) | May 6, 2024 | Ubuntu 20.04 LTS (focal) 2.31-0ubuntu9.16 | High | 4 | 0 | | [libc6-dev-x32 2.35-0ubuntu3.8](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libc6-dev-x32-2.35-0ubuntu3.8.md) | May 6, 2024 | Ubuntu 22.04.1 LTS (jammy) 2.35-0ubuntu3.8 | High | 4 | 0 | | [libc6-dev-x32 2.39-0ubuntu8.2](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libc6-dev-x32-2.39-0ubuntu8.2.md) | May 6, 2024 | Ubuntu 24.04.5 LTS (noble) 2.39-0ubuntu8.2 | High | 4 | 0 | | [libc6-dev-x32 2.27-3ubuntu1.6+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libc6-dev-x32-2.27-3ubuntu1.6-esm2.md) | Apr 16, 2024 | Ubuntu 18.04.6 LTS (bionic) 2.27-3ubuntu1.6+esm2 | High | 1 | 0 | | [libc6-dev-x32 2.31-0ubuntu9.15](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libc6-dev-x32-2.31-0ubuntu9.15.md) | Apr 16, 2024 | Ubuntu 20.04 LTS (focal) 2.31-0ubuntu9.15 | High | 1 | 0 | | [libc6-dev-x32 2.35-0ubuntu3.7](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libc6-dev-x32-2.35-0ubuntu3.7.md) | Apr 16, 2024 | Ubuntu 22.04.1 LTS (jammy) 2.35-0ubuntu3.7 | High | 1 | 0 | | [libc6-dev-x32 2.39-0ubuntu8.1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libc6-dev-x32-2.39-0ubuntu8.1.md) | Apr 16, 2024 | Ubuntu 24.04.5 LTS (noble) 2.39-0ubuntu8.1 | High | 1 | 0 | | [libc6-dev-x32 2.39-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libc6-dev-x32-2.39-0ubuntu1.md) | Jan 30, 2024 | Ubuntu 24.04.5 LTS (noble) 2.39-0ubuntu1 | High | 3 | 0 | | [libc6-dev-x32 2.35-0ubuntu3.4](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libc6-dev-x32-2.35-0ubuntu3.4.md) | Oct 3, 2023 | Ubuntu 22.04.1 LTS (jammy) 2.35-0ubuntu3.4 | Patch now | 1 | 1 | | [libc6-dev-x32 2.38-1ubuntu6](https://patchblox.com/security/data/fix/linux/ubuntu-noble-libc6-dev-x32-2.38-1ubuntu6.md) | Oct 3, 2023 | Ubuntu 24.04.5 LTS (noble) 2.38-1ubuntu6 | Patch now | 1 | 1 | | [libc6-dev-x32 2.35-0ubuntu3.5](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libc6-dev-x32-2.35-0ubuntu3.5.md) | Sep 25, 2023 | Ubuntu 22.04.1 LTS (jammy) 2.35-0ubuntu3.5 | High | 3 | 0 | | [libc6-dev-x32 2.27-3ubuntu1.6+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libc6-dev-x32-2.27-3ubuntu1.6-esm1.md) | Sep 18, 2023 | Ubuntu 18.04.6 LTS (bionic) 2.27-3ubuntu1.6+esm1 | High | 2 | 0 | | [libc6-dev-x32 2.31-0ubuntu9.14](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libc6-dev-x32-2.31-0ubuntu9.14.md) | Sep 18, 2023 | Ubuntu 20.04 LTS (focal) 2.31-0ubuntu9.14 | High | 2 | 0 | | [libc6-dev-x32 2.31-0ubuntu9.7](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libc6-dev-x32-2.31-0ubuntu9.7.md) | Jan 31, 2022 | Ubuntu 20.04 LTS (focal) 2.31-0ubuntu9.7 | High | 11 | 0 | | [libc6-dev-x32 2.27-3ubuntu1.5](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libc6-dev-x32-2.27-3ubuntu1.5.md) | Jan 31, 2022 | Ubuntu 18.04.6 LTS (bionic) 2.27-3ubuntu1.5 | High | 10 | 0 | | [libc6-dev-x32 2.27-3ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libc6-dev-x32-2.27-3ubuntu1.2.md) | Apr 30, 2020 | Ubuntu 18.04.6 LTS (bionic) 2.27-3ubuntu1.2 | High | 8 | 0 | --- Data as of 2026-11-07T12:40:37Z UTC. 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