# CVE-2022-26129: frr: Buffer overflow vulnerabilities exist in FRRouting through 8.1.0 due to wrong checks on the subtlv length in the func...

CVE-2022-26129 is fixed in 4 products on 1 platform, first by frr 8.1-1ubuntu1, released March 3, 2022. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2022-26129
- Priority: High
- CVSS: 7.8 (Medium)
- EPSS: 0.0101
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 3, 2022

## Description

Buffer overflow vulnerabilities exist in FRRouting through 8.1.0 due to wrong checks on the subtlv length in the functions, parse_hello_subtlv, parse_ihu_subtlv, and parse_update_subtlv in babeld/message.c.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | frr Debian 12.15 (bookworm) | 8.4.1-1 | [DEBIAN-CVE-2022-26129](https://patchblox.com/security/data/fix/linux/debian-cve-2022-26129.md) | Mar 3, 2022 |
| Linux | frr Debian 13.5 (trixie) | 8.4.1-1 | [DEBIAN-CVE-2022-26129](https://patchblox.com/security/data/fix/linux/debian-cve-2022-26129.md) | Mar 3, 2022 |
| Linux | frr Debian 14 | 8.4.1-1 | [DEBIAN-CVE-2022-26129](https://patchblox.com/security/data/fix/linux/debian-cve-2022-26129.md) | Mar 3, 2022 |
| Linux | frr Ubuntu 20.04 LTS (focal) | 7.2.1-1ubuntu0.2+esm2 | [frr 7.2.1-1ubuntu0.2+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-frr-7.2.1-1ubuntu0.2-esm2.md) | Apr 7, 2024 |
| Linux | frr Ubuntu 22.04.1 LTS (jammy) | 8.1-1ubuntu1 | [frr 8.1-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-frr-8.1-1ubuntu1.md) | Mar 3, 2022 |
| Linux | frr Ubuntu 24.10 (oracular) | 8.1-1ubuntu1 | [frr 8.1-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-frr-8.1-1ubuntu1.md) | Jan 16, 2026 |
| Linux | frr Ubuntu 25.04 (plucky) | 8.1-1ubuntu1 | [frr 8.1-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-frr-8.1-1ubuntu1.md) | Jan 16, 2026 |
| Linux | frr-pythontools Ubuntu 20.04 LTS (focal) | 7.2.1-1ubuntu0.2+esm2 | [frr-pythontools 7.2.1-1ubuntu0.2+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-frr-pythontools-7.2.1-1ubuntu0.2-esm2.md) | Apr 7, 2024 |
| Linux | frr-pythontools Ubuntu 22.04.1 LTS (jammy) | 8.1-1ubuntu1 | [frr-pythontools 8.1-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-frr-pythontools-8.1-1ubuntu1.md) | Mar 3, 2022 |
| Linux | frr-pythontools Ubuntu 24.10 (oracular) | 8.1-1ubuntu1 | [frr-pythontools 8.1-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-frr-pythontools-8.1-1ubuntu1.md) | Jan 16, 2026 |
| Linux | frr-pythontools Ubuntu 25.04 (plucky) | 8.1-1ubuntu1 | [frr-pythontools 8.1-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-frr-pythontools-8.1-1ubuntu1.md) | Jan 16, 2026 |
| Linux | frr-rpki-rtrlib Ubuntu 20.04 LTS (focal) | 7.2.1-1ubuntu0.2+esm2 | [frr-rpki-rtrlib 7.2.1-1ubuntu0.2+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-frr-rpki-rtrlib-7.2.1-1ubuntu0.2-esm2.md) | Apr 7, 2024 |
| Linux | frr-rpki-rtrlib Ubuntu 22.04.1 LTS (jammy) | 8.1-1ubuntu1 | [frr-rpki-rtrlib 8.1-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-frr-rpki-rtrlib-8.1-1ubuntu1.md) | Mar 3, 2022 |
| Linux | frr-rpki-rtrlib Ubuntu 24.10 (oracular) | 8.1-1ubuntu1 | [frr-rpki-rtrlib 8.1-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-frr-rpki-rtrlib-8.1-1ubuntu1.md) | Jan 16, 2026 |
| Linux | frr-rpki-rtrlib Ubuntu 25.04 (plucky) | 8.1-1ubuntu1 | [frr-rpki-rtrlib 8.1-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-frr-rpki-rtrlib-8.1-1ubuntu1.md) | Jan 16, 2026 |
| Linux | frr-snmp Ubuntu 20.04 LTS (focal) | 7.2.1-1ubuntu0.2+esm2 | [frr-snmp 7.2.1-1ubuntu0.2+esm2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-frr-snmp-7.2.1-1ubuntu0.2-esm2.md) | Apr 7, 2024 |
| Linux | frr-snmp Ubuntu 22.04.1 LTS (jammy) | 8.1-1ubuntu1 | [frr-snmp 8.1-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-frr-snmp-8.1-1ubuntu1.md) | Mar 3, 2022 |
| Linux | frr-snmp Ubuntu 24.10 (oracular) | 8.1-1ubuntu1 | [frr-snmp 8.1-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-frr-snmp-8.1-1ubuntu1.md) | Jan 16, 2026 |
| Linux | frr-snmp Ubuntu 25.04 (plucky) | 8.1-1ubuntu1 | [frr-snmp 8.1-1ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-frr-snmp-8.1-1ubuntu1.md) | Jan 16, 2026 |

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Data as of 2026-11-08T06:59:42Z 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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