Linux
libc6 security updates
Patch Radar has 46 security fixes for libc6, closing 52 CVEs, 1 of which is being exploited. The newest is libc6 2.39-0ubuntu8.9 (2.39-0ubuntu8.9), released September 11, 2026.
1 exploited CVEs
Latest version
n/a
Release date not known
Security fixes
46
On record in Patch Radar
CVEs
52
Closed by those fixes
Exploited
1
Vendor report or CISA KEV
Security fixes, newest first
| Priority | Fix | Release | Fixed in | CVEs | Exploited | Released |
|---|---|---|---|---|---|---|
| High | libc6 2.39-0ubuntu8.9 | Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu8.9 | 6 | Sep 11, 2026 | |
| Routine | libc6 2.35-0ubuntu3.15 | Ubuntu 22.04.1 LTS (jammy) | 2.35-0ubuntu3.15 | 5 | Sep 10, 2026 | |
| High | libc6 2.39-0ubuntu8.8 | Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu8.8 | 7 | Apr 28, 2026 | |
| High | libc6 2.35-0ubuntu3.14 | Ubuntu 22.04.1 LTS (jammy) | 2.35-0ubuntu3.14 | 5 | Apr 28, 2026 | |
| High | libc6 2.31-0ubuntu9.18+esm1 | Ubuntu 20.04 LTS (focal) | 2.31-0ubuntu9.18+esm1 | 4 | Jan 20, 2026 | |
| High | libc6 2.27-3ubuntu1.6+esm6 | Ubuntu 18.04.6 LTS (bionic) | 2.27-3ubuntu1.6+esm6 | 3 | Jan 20, 2026 | |
| High | libc6 2.35-0ubuntu3.13 | Ubuntu 22.04.1 LTS (jammy) | 2.35-0ubuntu3.13 | 3 | Jan 20, 2026 | |
| High | libc6 2.39-0ubuntu8.7 | Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu8.7 | 3 | Jan 20, 2026 | |
| High | libc6 2.42-0ubuntu3.1 | Ubuntu 25.10 (questing) | 2.42-0ubuntu3.1 | 3 | Jan 20, 2026 | |
| Routine | libc6 2.41-6ubuntu1.1 | Ubuntu 25.04 (plucky) | 2.41-6ubuntu1.1 | 2 | Jan 16, 2026 | |
| Routine | libc6 2.41-6ubuntu1.2 | Ubuntu 25.04 (plucky) | 2.41-6ubuntu1.2 | 1 | Jan 16, 2026 | |
| High | libc6 2.38-1ubuntu5 | Ubuntu 25.04 (plucky) | 2.38-1ubuntu5 | 2 | Jan 16, 2026 | |
| Routine | libc6 2.32-0ubuntu3 | Ubuntu 25.04 (plucky) | 2.32-0ubuntu3 | 1 | Jan 16, 2026 | |
| Routine | libc6 2.41-1ubuntu1 | Ubuntu 25.04 (plucky) | 2.41-1ubuntu1 | 1 | Jan 16, 2026 | |
| High | libc6 2.38-1ubuntu5 | Ubuntu 24.10 (oracular) | 2.38-1ubuntu5 | 2 | Jan 16, 2026 | |
| Routine | libc6 2.40-1ubuntu3.1 | Ubuntu 24.10 (oracular) | 2.40-1ubuntu3.1 | 1 | Jan 16, 2026 | |
| Routine | libc6 2.32-0ubuntu3 | Ubuntu 24.10 (oracular) | 2.32-0ubuntu3 | 1 | Jan 16, 2026 | |
| Routine | libc6 2.35-0ubuntu3.11 | Ubuntu 22.04.1 LTS (jammy) | 2.35-0ubuntu3.11 | 1 | Jul 23, 2025 | |
| Routine | libc6 2.39-0ubuntu8.6 | Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu8.6 | 1 | Jul 23, 2025 | |
| Routine | libc6 2.39-0ubuntu8.5 | Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu8.5 | 1 | Jun 5, 2025 | |
| High | libc6 2.27-3ubuntu1.6+esm5 | Ubuntu 18.04.6 LTS (bionic) | 2.27-3ubuntu1.6+esm5 | 1 | May 16, 2025 | |
| High | libc6 2.31-0ubuntu9.18 | Ubuntu 20.04 LTS (focal) | 2.31-0ubuntu9.18 | 1 | May 16, 2025 | |
| High | libc6 2.35-0ubuntu3.10 | Ubuntu 22.04.1 LTS (jammy) | 2.35-0ubuntu3.10 | 1 | May 16, 2025 | |
| Routine | libc6 2.27-3ubuntu1.6+esm4 | Ubuntu 18.04.6 LTS (bionic) | 2.27-3ubuntu1.6+esm4 | 1 | Jan 22, 2025 | |
| Routine | libc6 2.31-0ubuntu9.17 | Ubuntu 20.04 LTS (focal) | 2.31-0ubuntu9.17 | 1 | Jan 22, 2025 | |
| Routine | libc6 2.35-0ubuntu3.9 | Ubuntu 22.04.1 LTS (jammy) | 2.35-0ubuntu3.9 | 1 | Jan 22, 2025 | |
| Routine | libc6 2.39-0ubuntu8.4 | Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu8.4 | 1 | Jan 22, 2025 | |
| High | libc6 2.27-3ubuntu1.6+esm3 | Ubuntu 18.04.6 LTS (bionic) | 2.27-3ubuntu1.6+esm3 | 4 | May 6, 2024 | |
| High | libc6 2.31-0ubuntu9.16 | Ubuntu 20.04 LTS (focal) | 2.31-0ubuntu9.16 | 4 | May 6, 2024 | |
| High | libc6 2.35-0ubuntu3.8 | Ubuntu 22.04.1 LTS (jammy) | 2.35-0ubuntu3.8 | 4 | May 6, 2024 | |
| High | libc6 2.39-0ubuntu8.2 | Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu8.2 | 4 | May 6, 2024 | |
| High | libc6 2.39-0ubuntu8.1 | Ubuntu 24.10 (oracular) | 2.39-0ubuntu8.1 | 1 | Apr 17, 2024 | |
| High | libc6 2.39-0ubuntu8.1 | Ubuntu 25.04 (plucky) | 2.39-0ubuntu8.1 | 1 | Apr 17, 2024 | |
| High | libc6 2.27-3ubuntu1.6+esm2 | Ubuntu 18.04.6 LTS (bionic) | 2.27-3ubuntu1.6+esm2 | 1 | Apr 16, 2024 | |
| High | libc6 2.31-0ubuntu9.15 | Ubuntu 20.04 LTS (focal) | 2.31-0ubuntu9.15 | 1 | Apr 16, 2024 | |
| High | libc6 2.35-0ubuntu3.7 | Ubuntu 22.04.1 LTS (jammy) | 2.35-0ubuntu3.7 | 1 | Apr 16, 2024 | |
| High | libc6 2.39-0ubuntu8.1 | Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu8.1 | 1 | Apr 16, 2024 | |
| High | libc6 2.39-0ubuntu1 | Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu1 | 3 | Jan 30, 2024 | |
| Patch now | libc6 2.35-0ubuntu3.4 | Ubuntu 22.04.1 LTS (jammy) | 2.35-0ubuntu3.4 | 1 | 1 | Oct 3, 2023 |
| Patch now | libc6 2.38-1ubuntu6 | Ubuntu 24.04.5 LTS (noble) | 2.38-1ubuntu6 | 1 | 1 | Oct 3, 2023 |
| High | libc6 2.35-0ubuntu3.5 | Ubuntu 22.04.1 LTS (jammy) | 2.35-0ubuntu3.5 | 3 | Sep 25, 2023 | |
| Routine | libc6 2.27-3ubuntu1.6+esm1 | Ubuntu 18.04.6 LTS (bionic) | 2.27-3ubuntu1.6+esm1 | 2 | Sep 18, 2023 | |
| Routine | libc6 2.31-0ubuntu9.14 | Ubuntu 20.04 LTS (focal) | 2.31-0ubuntu9.14 | 2 | Sep 18, 2023 | |
| High | libc6 2.31-0ubuntu9.7 | Ubuntu 20.04 LTS (focal) | 2.31-0ubuntu9.7 | 11 | Jan 31, 2022 | |
| High | libc6 2.27-3ubuntu1.5 | Ubuntu 18.04.6 LTS (bionic) | 2.27-3ubuntu1.5 | 10 | Jan 31, 2022 | |
| High | libc6 2.27-3ubuntu1.2 | Ubuntu 18.04.6 LTS (bionic) | 2.27-3ubuntu1.2 | 8 | Apr 30, 2020 |