# protobuf security updates

Patch Radar has 63 security fixes for protobuf, closing 10 CVEs. The newest security fix is DEBIAN-CVE-2026-6409 (3.21.12-16), released April 16, 2026.

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

## Security fixes, newest first

| Fix | Released | Fixed in | Priority | CVEs | Exploited |
|---|---|---|---|---:|---:|
| [DEBIAN-CVE-2026-6409](https://patchblox.com/security/data/fix/linux/debian-cve-2026-6409.md) | Apr 16, 2026 | Debian 14 3.21.12-16 | High | 1 | 0 |
| [DEBIAN-CVE-2026-6409](https://patchblox.com/security/data/fix/linux/debian-cve-2026-6409.md) | Apr 16, 2026 | Debian 13.5 (trixie) 3.21.12-11+deb13u1 | High | 1 | 0 |
| [DEBIAN-CVE-2026-6409](https://patchblox.com/security/data/fix/linux/debian-cve-2026-6409.md) | Apr 16, 2026 | Debian 12.15 (bookworm) 3.21.12-3+deb12u1 | High | 1 | 0 |
| [OPENSUSE-SU-2026:20390-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-20390-1.md) | Mar 18, 2026 | opensuse-leap 16.0 28.3-160000.3.1 | High | 2 | 0 |
| [SUSE-SU-2026:20907-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-20907-1.md) | Mar 18, 2026 | sles 16.0 28.3-160000.3.1 | High | 2 | 0 |
| [RHSA-2026:3095](https://patchblox.com/security/data/fix/linux/rhsa-2026-3095.md) | Mar 12, 2026 | RHEL 9 0:3.14.0-17.el9_7 | High | 1 | 0 |
| [RLSA-2026:3094](https://patchblox.com/security/data/fix/linux/rlsa-2026-3094.md) | Feb 24, 2026 | rocky 10 0:3.19.6-15.el10_1 | High | 1 | 0 |
| [RLSA-2026:3095](https://patchblox.com/security/data/fix/linux/rlsa-2026-3095.md) | Feb 24, 2026 | rocky 9 0:3.14.0-17.el9_7 | High | 1 | 0 |
| [SUSE-SU-2026:0618-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0618-1.md) | Feb 24, 2026 | sles 15.6 3.9.2-150200.4.30.1 | High | 1 | 0 |
| [SUSE-SU-2026:0618-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0618-1.md) | Feb 24, 2026 | sles 15.7 3.9.2-150200.4.30.1 | High | 1 | 0 |
| [ALSA-2026:3094](https://patchblox.com/security/data/fix/linux/alsa-2026-3094.md) | Feb 23, 2026 | almalinux 10 3.19.6-15.el10_1 | High | 1 | 0 |
| [ALSA-2026:3095](https://patchblox.com/security/data/fix/linux/alsa-2026-3095.md) | Feb 23, 2026 | almalinux 9 3.14.0-17.el9_7 | High | 1 | 0 |
| [ELSA-2026-3094](https://patchblox.com/security/data/fix/linux/elsa-2026-3094.md) | Feb 23, 2026 | ol 10 0:3.19.6-15.el10_1 | High | 1 | 0 |
| [ELSA-2026-3095](https://patchblox.com/security/data/fix/linux/elsa-2026-3095.md) | Feb 23, 2026 | ol 9 0:3.14.0-17.el9_7 | High | 1 | 0 |
| [ALAS2023-2026-1407](https://patchblox.com/security/data/fix/linux/alas2023-2026-1407.md) | Feb 16, 2026 | amzn 2023 3.19.6-1.amzn2023.0.3 | High | 1 | 0 |
| [SUSE-SU-2026:0374-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0374-1.md) | Feb 4, 2026 | opensuse-leap 15.6 25.1-150600.16.16.1 | High | 1 | 0 |
| [DEBIAN-CVE-2026-0994](https://patchblox.com/security/data/fix/linux/debian-cve-2026-0994.md) | Jan 23, 2026 | Debian 14 3.21.12-16 | High | 1 | 0 |
| [DEBIAN-CVE-2026-0994](https://patchblox.com/security/data/fix/linux/debian-cve-2026-0994.md) | Jan 23, 2026 | Debian 12.15 (bookworm) 3.21.12-3+deb12u1 | High | 1 | 0 |
| [DEBIAN-CVE-2026-0994](https://patchblox.com/security/data/fix/linux/debian-cve-2026-0994.md) | Jan 23, 2026 | Debian 13.5 (trixie) 3.21.12-11+deb13u1 | High | 1 | 0 |
| [RHSA-2026:3218](https://patchblox.com/security/data/fix/linux/rhsa-2026-3218.md) | Jan 23, 2026 | RHEL 10 3.19.6-11.el10_0.1 | High | 1 | 0 |
| [SUSE-SU-2025:3722-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-3722-1.md) | Oct 22, 2025 | sles 15.6 3.9.2-150200.4.27.1 | Routine | 1 | 0 |
| [SUSE-SU-2025:3722-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-3722-1.md) | Oct 22, 2025 | sles 15.7 3.9.2-150200.4.27.1 | Routine | 1 | 0 |
| [RLSA-2025:7138](https://patchblox.com/security/data/fix/linux/rlsa-2025-7138.md) | Oct 4, 2025 | rocky 9 0:3.14.0-16.el9 | High | 1 | 0 |
| [SUSE-SU-2025:02311-1](https://patchblox.com/security/data/fix/linux/suse-su-2025-02311-1.md) | Jul 15, 2025 | opensuse-leap 15.6 25.1-150600.16.13.1 | Routine | 1 | 0 |
| [DEBIAN-CVE-2025-4565](https://patchblox.com/security/data/fix/linux/debian-cve-2025-4565.md) | Jun 16, 2025 | Debian 14 3.21.12-12 | Routine | 1 | 0 |
| [DEBIAN-CVE-2025-4565](https://patchblox.com/security/data/fix/linux/debian-cve-2025-4565.md) | Jun 16, 2025 | Debian 12.15 (bookworm) 3.21.12-3+deb12u1 | Routine | 1 | 0 |
| [DEBIAN-CVE-2025-4565](https://patchblox.com/security/data/fix/linux/debian-cve-2025-4565.md) | Jun 16, 2025 | Debian 13.5 (trixie) 3.21.12-11+deb13u1 | Routine | 1 | 0 |
| [ELSA-2025-7138](https://patchblox.com/security/data/fix/linux/elsa-2025-7138.md) | May 16, 2025 | ol 9 0:3.14.0-16.el9 | High | 1 | 0 |
| [ALSA-2025:7138](https://patchblox.com/security/data/fix/linux/alsa-2025-7138.md) | May 13, 2025 | almalinux 9 3.14.0-16.el9 | High | 1 | 0 |
| [RHSA-2025:7138](https://patchblox.com/security/data/fix/linux/rhsa-2025-7138.md) | May 13, 2025 | RHEL 9 0:3.14.0-16.el9 | High | 1 | 0 |
| [SUSE-SU-2024:3745-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3745-1.md) | Oct 22, 2024 | sles 15.6 25.1-150600.16.7.1 | High | 1 | 0 |
| [SUSE-SU-2024:3745-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3745-1.md) | Oct 22, 2024 | opensuse-leap 15.6 25.1-150600.16.7.1 | High | 1 | 0 |
| [DEBIAN-CVE-2024-7254](https://patchblox.com/security/data/fix/linux/debian-cve-2024-7254.md) | Sep 19, 2024 | Debian 14 3.21.12-12 | High | 1 | 0 |
| [DEBIAN-CVE-2024-7254](https://patchblox.com/security/data/fix/linux/debian-cve-2024-7254.md) | Sep 19, 2024 | Debian 12.15 (bookworm) 3.21.12-3+deb12u1 | High | 1 | 0 |
| [DEBIAN-CVE-2024-7254](https://patchblox.com/security/data/fix/linux/debian-cve-2024-7254.md) | Sep 19, 2024 | Debian 13.5 (trixie) 3.21.12-11+deb13u1 | High | 1 | 0 |
| [ALAS2023-2023-049](https://patchblox.com/security/data/fix/linux/alas2023-2023-049.md) | Feb 17, 2023 | amzn 2023 3.19.6-1.amzn2023.0.1 | High | 2 | 0 |
| [ALAS2023-2023-009](https://patchblox.com/security/data/fix/linux/alas2023-2023-009.md) | Feb 17, 2023 | amzn 2023 3.14.0-7.amzn2023.0.3 | High | 1 | 0 |
| [DEBIAN-CVE-2022-3509](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3509.md) | Dec 12, 2022 | Debian 12.15 (bookworm) 3.21.9-3 | High | 1 | 0 |
| [DEBIAN-CVE-2022-3509](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3509.md) | Dec 12, 2022 | Debian 13.5 (trixie) 3.21.9-3 | High | 1 | 0 |
| [DEBIAN-CVE-2022-3509](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3509.md) | Dec 12, 2022 | Debian 14 3.21.9-3 | High | 1 | 0 |
| [DEBIAN-CVE-2022-3510](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3510.md) | Dec 12, 2022 | Debian 12.15 (bookworm) 3.21.9-3 | High | 1 | 0 |
| [DEBIAN-CVE-2022-3510](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3510.md) | Dec 12, 2022 | Debian 13.5 (trixie) 3.21.9-3 | High | 1 | 0 |
| [DEBIAN-CVE-2022-3510](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3510.md) | Dec 12, 2022 | Debian 14 3.21.9-3 | High | 1 | 0 |
| [ELSA-2022-7970](https://patchblox.com/security/data/fix/linux/elsa-2022-7970.md) | Nov 22, 2022 | ol 9 0:3.14.0-13.el9 | High | 1 | 0 |
| [RLSA-2022:7970](https://patchblox.com/security/data/fix/linux/rlsa-2022-7970.md) | Nov 15, 2022 | rocky 9 0:3.14.0-13.el9 | High | 1 | 0 |
| [ALSA-2022:7970](https://patchblox.com/security/data/fix/linux/alsa-2022-7970.md) | Nov 15, 2022 | almalinux 9 3.14.0-13.el9 | High | 1 | 0 |
| [ELSA-2022-7464](https://patchblox.com/security/data/fix/linux/elsa-2022-7464.md) | Nov 15, 2022 | ol 8 0:3.5.0-15.el8 | High | 1 | 0 |
| [RHSA-2022:7970](https://patchblox.com/security/data/fix/linux/rhsa-2022-7970.md) | Nov 15, 2022 | RHEL 9 0:3.14.0-13.el9 | High | 1 | 0 |
| [RLSA-2022:7464](https://patchblox.com/security/data/fix/linux/rlsa-2022-7464.md) | Nov 8, 2022 | rocky 8 0:3.5.0-15.el8 | High | 1 | 0 |
| [ALSA-2022:7464](https://patchblox.com/security/data/fix/linux/alsa-2022-7464.md) | Nov 8, 2022 | almalinux 8 3.5.0-15.el8 | High | 1 | 0 |
| [RHSA-2022:7464](https://patchblox.com/security/data/fix/linux/rhsa-2022-7464.md) | Nov 8, 2022 | RHEL 8 0:3.5.0-15.el8 | High | 1 | 0 |
| [DEBIAN-CVE-2022-3171](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3171.md) | Oct 12, 2022 | Debian 12.15 (bookworm) 3.21.9-3 | High | 1 | 0 |
| [DEBIAN-CVE-2022-3171](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3171.md) | Oct 12, 2022 | Debian 13.5 (trixie) 3.21.9-3 | High | 1 | 0 |
| [DEBIAN-CVE-2022-3171](https://patchblox.com/security/data/fix/linux/debian-cve-2022-3171.md) | Oct 12, 2022 | Debian 14 3.21.9-3 | High | 1 | 0 |
| [DEBIAN-CVE-2022-1941](https://patchblox.com/security/data/fix/linux/debian-cve-2022-1941.md) | Sep 22, 2022 | Debian 12.15 (bookworm) 3.21.9-3 | High | 1 | 0 |
| [DEBIAN-CVE-2022-1941](https://patchblox.com/security/data/fix/linux/debian-cve-2022-1941.md) | Sep 22, 2022 | Debian 13.5 (trixie) 3.21.9-3 | High | 1 | 0 |
| [DEBIAN-CVE-2022-1941](https://patchblox.com/security/data/fix/linux/debian-cve-2022-1941.md) | Sep 22, 2022 | Debian 14 3.21.9-3 | High | 1 | 0 |
| [DEBIAN-CVE-2021-22570](https://patchblox.com/security/data/fix/linux/debian-cve-2021-22570.md) | Jan 26, 2022 | Debian 12.15 (bookworm) 3.21.9-3 | High | 1 | 0 |
| [DEBIAN-CVE-2021-22570](https://patchblox.com/security/data/fix/linux/debian-cve-2021-22570.md) | Jan 26, 2022 | Debian 13.5 (trixie) 3.21.9-3 | High | 1 | 0 |
| [DEBIAN-CVE-2021-22570](https://patchblox.com/security/data/fix/linux/debian-cve-2021-22570.md) | Jan 26, 2022 | Debian 14 3.21.9-3 | High | 1 | 0 |
| [DEBIAN-CVE-2021-22569](https://patchblox.com/security/data/fix/linux/debian-cve-2021-22569.md) | Jan 10, 2022 | Debian 12.15 (bookworm) 3.21.9-3 | Routine | 1 | 0 |
| [DEBIAN-CVE-2021-22569](https://patchblox.com/security/data/fix/linux/debian-cve-2021-22569.md) | Jan 10, 2022 | Debian 13.5 (trixie) 3.21.9-3 | Routine | 1 | 0 |
| [DEBIAN-CVE-2021-22569](https://patchblox.com/security/data/fix/linux/debian-cve-2021-22569.md) | Jan 10, 2022 | Debian 14 3.21.9-3 | Routine | 1 | 0 |

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Data as of 2026-11-07T12:40:37Z 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

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