# CVE-2021-41990: libcharon-extauth-plugins: The gmp plugin in strongSwan before 5.9.4 has a remote integer overflow viaa crafted certificate with an RSASSA-PSS s...

CVE-2021-41990 is fixed in 21 products on 1 platform, first by charon-cmd 5.6.2-1ubuntu2.7, released October 18, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-41990
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0692
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 18, 2021

## Description

The gmp plugin in strongSwan before 5.9.4 has a remote integer overflow viaa crafted certificate with an RSASSA-PSS signature. For example, this canbe triggered by an unrelated self-signed CA certificate sent by aninitiator. Remote code execution cannot occur.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | charon-cmd Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [charon-cmd 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-charon-cmd-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | charon-cmd Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [charon-cmd 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-charon-cmd-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | charon-cmd Ubuntu 22.04.1 LTS (jammy) | 5.9.1-1ubuntu3.1 | [charon-cmd 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-charon-cmd-5.9.1-1ubuntu3.1.md) | Oct 18, 2021 |
| Linux | charon-cmd Ubuntu 24.10 (oracular) | 5.9.1-1ubuntu3.1 | [charon-cmd 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-charon-cmd-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | charon-cmd Ubuntu 25.04 (plucky) | 5.9.1-1ubuntu3.1 | [charon-cmd 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-charon-cmd-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | charon-systemd Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [charon-systemd 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-charon-systemd-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | charon-systemd Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [charon-systemd 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-charon-systemd-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | charon-systemd Ubuntu 22.04.1 LTS (jammy) | 5.9.1-1ubuntu3.1 | [charon-systemd 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-charon-systemd-5.9.1-1ubuntu3.1.md) | Oct 18, 2021 |
| Linux | charon-systemd Ubuntu 24.10 (oracular) | 5.9.1-1ubuntu3.1 | [charon-systemd 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-charon-systemd-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | charon-systemd Ubuntu 25.04 (plucky) | 5.9.1-1ubuntu3.1 | [charon-systemd 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-charon-systemd-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | libcharon-extauth-plugins Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [libcharon-extauth-plugins 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcharon-extauth-plugins-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | libcharon-extauth-plugins Ubuntu 22.04.1 LTS (jammy) | 5.9.1-1ubuntu3.1 | [libcharon-extauth-plugins 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcharon-extauth-plugins-5.9.1-1ubuntu3.1.md) | Oct 18, 2021 |
| Linux | libcharon-extauth-plugins Ubuntu 24.10 (oracular) | 5.9.1-1ubuntu3.1 | [libcharon-extauth-plugins 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libcharon-extauth-plugins-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | libcharon-extauth-plugins Ubuntu 25.04 (plucky) | 5.9.1-1ubuntu3.1 | [libcharon-extauth-plugins 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libcharon-extauth-plugins-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | libcharon-extra-plugins Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [libcharon-extra-plugins 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcharon-extra-plugins-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | libcharon-extra-plugins Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [libcharon-extra-plugins 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcharon-extra-plugins-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | libcharon-extra-plugins Ubuntu 22.04.1 LTS (jammy) | 5.9.1-1ubuntu3.1 | [libcharon-extra-plugins 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libcharon-extra-plugins-5.9.1-1ubuntu3.1.md) | Oct 18, 2021 |
| Linux | libcharon-extra-plugins Ubuntu 24.10 (oracular) | 5.9.1-1ubuntu3.1 | [libcharon-extra-plugins 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libcharon-extra-plugins-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | libcharon-extra-plugins Ubuntu 25.04 (plucky) | 5.9.1-1ubuntu3.1 | [libcharon-extra-plugins 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libcharon-extra-plugins-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | libcharon-standard-plugins Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [libcharon-standard-plugins 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcharon-standard-plugins-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | libcharon-standard-plugins Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [libcharon-standard-plugins 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcharon-standard-plugins-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | libstrongswan Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [libstrongswan 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libstrongswan-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | libstrongswan Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [libstrongswan 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libstrongswan-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | libstrongswan Ubuntu 22.04.1 LTS (jammy) | 5.9.1-1ubuntu3.1 | [libstrongswan 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libstrongswan-5.9.1-1ubuntu3.1.md) | Oct 18, 2021 |
| Linux | libstrongswan Ubuntu 24.10 (oracular) | 5.9.1-1ubuntu3.1 | [libstrongswan 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libstrongswan-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | libstrongswan Ubuntu 25.04 (plucky) | 5.9.1-1ubuntu3.1 | [libstrongswan 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libstrongswan-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | libstrongswan-extra-plugins Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [libstrongswan-extra-plugins 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libstrongswan-extra-plugins-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | libstrongswan-extra-plugins Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [libstrongswan-extra-plugins 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libstrongswan-extra-plugins-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | libstrongswan-extra-plugins Ubuntu 22.04.1 LTS (jammy) | 5.9.1-1ubuntu3.1 | [libstrongswan-extra-plugins 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libstrongswan-extra-plugins-5.9.1-1ubuntu3.1.md) | Oct 18, 2021 |
| Linux | libstrongswan-extra-plugins Ubuntu 24.10 (oracular) | 5.9.1-1ubuntu3.1 | [libstrongswan-extra-plugins 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libstrongswan-extra-plugins-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | libstrongswan-extra-plugins Ubuntu 25.04 (plucky) | 5.9.1-1ubuntu3.1 | [libstrongswan-extra-plugins 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libstrongswan-extra-plugins-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | libstrongswan-standard-plugins Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [libstrongswan-standard-plugins 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libstrongswan-standard-plugins-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | libstrongswan-standard-plugins Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [libstrongswan-standard-plugins 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libstrongswan-standard-plugins-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | libstrongswan-standard-plugins Ubuntu 22.04.1 LTS (jammy) | 5.9.1-1ubuntu3.1 | [libstrongswan-standard-plugins 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libstrongswan-standard-plugins-5.9.1-1ubuntu3.1.md) | Oct 18, 2021 |
| Linux | libstrongswan-standard-plugins Ubuntu 24.10 (oracular) | 5.9.1-1ubuntu3.1 | [libstrongswan-standard-plugins 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libstrongswan-standard-plugins-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | libstrongswan-standard-plugins Ubuntu 25.04 (plucky) | 5.9.1-1ubuntu3.1 | [libstrongswan-standard-plugins 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libstrongswan-standard-plugins-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | strongswan Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [strongswan 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | strongswan Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [strongswan 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | strongswan Ubuntu 22.04.1 LTS (jammy) | 5.9.1-1ubuntu3.1 | [strongswan 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-strongswan-5.9.1-1ubuntu3.1.md) | Oct 18, 2021 |
| Linux | strongswan Ubuntu 24.10 (oracular) | 5.9.1-1ubuntu3.1 | [strongswan 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-strongswan-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | strongswan Ubuntu 25.04 (plucky) | 5.9.1-1ubuntu3.1 | [strongswan 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-strongswan-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | strongswan-charon Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [strongswan-charon 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-charon-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | strongswan-charon Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [strongswan-charon 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-charon-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | strongswan-charon Ubuntu 22.04.1 LTS (jammy) | 5.9.1-1ubuntu3.1 | [strongswan-charon 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-strongswan-charon-5.9.1-1ubuntu3.1.md) | Oct 18, 2021 |
| Linux | strongswan-charon Ubuntu 24.10 (oracular) | 5.9.1-1ubuntu3.1 | [strongswan-charon 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-strongswan-charon-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | strongswan-charon Ubuntu 25.04 (plucky) | 5.9.1-1ubuntu3.1 | [strongswan-charon 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-strongswan-charon-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | strongswan-libcharon Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [strongswan-libcharon 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-libcharon-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | strongswan-libcharon Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [strongswan-libcharon 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-libcharon-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | strongswan-libcharon Ubuntu 22.04.1 LTS (jammy) | 5.9.1-1ubuntu3.1 | [strongswan-libcharon 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-strongswan-libcharon-5.9.1-1ubuntu3.1.md) | Oct 18, 2021 |
| Linux | strongswan-libcharon Ubuntu 24.10 (oracular) | 5.9.1-1ubuntu3.1 | [strongswan-libcharon 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-strongswan-libcharon-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | strongswan-libcharon Ubuntu 25.04 (plucky) | 5.9.1-1ubuntu3.1 | [strongswan-libcharon 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-strongswan-libcharon-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | strongswan-nm Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [strongswan-nm 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-nm-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | strongswan-nm Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [strongswan-nm 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-nm-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | strongswan-nm Ubuntu 22.04.1 LTS (jammy) | 5.9.1-1ubuntu3.1 | [strongswan-nm 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-strongswan-nm-5.9.1-1ubuntu3.1.md) | Oct 18, 2021 |
| Linux | strongswan-nm Ubuntu 24.10 (oracular) | 5.9.1-1ubuntu3.1 | [strongswan-nm 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-strongswan-nm-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | strongswan-nm Ubuntu 25.04 (plucky) | 5.9.1-1ubuntu3.1 | [strongswan-nm 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-strongswan-nm-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | strongswan-pki Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [strongswan-pki 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-pki-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | strongswan-pki Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [strongswan-pki 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-pki-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | strongswan-pki Ubuntu 22.04.1 LTS (jammy) | 5.9.1-1ubuntu3.1 | [strongswan-pki 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-strongswan-pki-5.9.1-1ubuntu3.1.md) | Oct 18, 2021 |
| Linux | strongswan-pki Ubuntu 24.10 (oracular) | 5.9.1-1ubuntu3.1 | [strongswan-pki 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-strongswan-pki-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | strongswan-pki Ubuntu 25.04 (plucky) | 5.9.1-1ubuntu3.1 | [strongswan-pki 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-strongswan-pki-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | strongswan-scepclient Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [strongswan-scepclient 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-scepclient-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | strongswan-scepclient Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [strongswan-scepclient 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-scepclient-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | strongswan-scepclient Ubuntu 22.04.1 LTS (jammy) | 5.9.1-1ubuntu3.1 | [strongswan-scepclient 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-strongswan-scepclient-5.9.1-1ubuntu3.1.md) | Oct 18, 2021 |
| Linux | strongswan-starter Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [strongswan-starter 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-starter-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | strongswan-starter Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [strongswan-starter 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-starter-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | strongswan-starter Ubuntu 22.04.1 LTS (jammy) | 5.9.1-1ubuntu3.1 | [strongswan-starter 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-strongswan-starter-5.9.1-1ubuntu3.1.md) | Oct 18, 2021 |
| Linux | strongswan-starter Ubuntu 24.10 (oracular) | 5.9.1-1ubuntu3.1 | [strongswan-starter 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-strongswan-starter-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | strongswan-starter Ubuntu 25.04 (plucky) | 5.9.1-1ubuntu3.1 | [strongswan-starter 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-strongswan-starter-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | strongswan-swanctl Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [strongswan-swanctl 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-swanctl-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | strongswan-swanctl Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [strongswan-swanctl 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-swanctl-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | strongswan-swanctl Ubuntu 22.04.1 LTS (jammy) | 5.9.1-1ubuntu3.1 | [strongswan-swanctl 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-strongswan-swanctl-5.9.1-1ubuntu3.1.md) | Oct 18, 2021 |
| Linux | strongswan-swanctl Ubuntu 24.10 (oracular) | 5.9.1-1ubuntu3.1 | [strongswan-swanctl 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-strongswan-swanctl-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | strongswan-swanctl Ubuntu 25.04 (plucky) | 5.9.1-1ubuntu3.1 | [strongswan-swanctl 5.9.1-1ubuntu3.1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-strongswan-swanctl-5.9.1-1ubuntu3.1.md) | Jan 16, 2026 |
| Linux | strongswan-tnc-base Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [strongswan-tnc-base 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-tnc-base-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | strongswan-tnc-base Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [strongswan-tnc-base 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-tnc-base-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | strongswan-tnc-client Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [strongswan-tnc-client 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-tnc-client-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | strongswan-tnc-client Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [strongswan-tnc-client 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-tnc-client-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | strongswan-tnc-ifmap Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [strongswan-tnc-ifmap 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-tnc-ifmap-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | strongswan-tnc-ifmap Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [strongswan-tnc-ifmap 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-tnc-ifmap-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | strongswan-tnc-pdp Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [strongswan-tnc-pdp 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-tnc-pdp-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | strongswan-tnc-pdp Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [strongswan-tnc-pdp 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-tnc-pdp-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |
| Linux | strongswan-tnc-server Ubuntu 18.04.6 LTS (bionic) | 5.6.2-1ubuntu2.7 | [strongswan-tnc-server 5.6.2-1ubuntu2.7](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-strongswan-tnc-server-5.6.2-1ubuntu2.7.md) | Oct 18, 2021 |
| Linux | strongswan-tnc-server Ubuntu 20.04 LTS (focal) | 5.8.2-1ubuntu3.3 | [strongswan-tnc-server 5.8.2-1ubuntu3.3](https://patchblox.com/security/data/fix/linux/ubuntu-focal-strongswan-tnc-server-5.8.2-1ubuntu3.3.md) | Oct 18, 2021 |

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Data as of 2026-11-08T00:53:09Z 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

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

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