CVE-2026-39830 · cross-distro fix matrix

CVE-2026-39830: USN-8447-1 fixed vulnerabilities in Go Cryptography. This update provides

Affects 7 Linux releases across 15 (distro × package) combinations. First disclosed: 2026-05-22.

CVSS v3:CRITICAL · 9.1(NVD-published)

Fix per ecosystem

Each block below is a distro release where CVE-2026-39830 has a known fix. Run the listed command on that distro to remediate.

Ubuntu bionic

Source: Ubuntu USN

google-guest-agent→ fixed in20241011.01-0ubuntu1~18.04.0+esm3USN-8447-3
```
sudo apt-get install --only-upgrade -y google-guest-agent
```
lxd→ fixed in3.0.3-0ubuntu1~18.04.2+esm3USN-8447-2
```
sudo apt-get install --only-upgrade -y lxd
```
lxd-client→ fixed in3.0.3-0ubuntu1~18.04.2+esm3USN-8447-2
```
sudo apt-get install --only-upgrade -y lxd-client
```
lxd-tools→ fixed in3.0.3-0ubuntu1~18.04.2+esm3USN-8447-2
```
sudo apt-get install --only-upgrade -y lxd-tools
```

Ubuntu focal

Source: Ubuntu USN

google-guest-agent→ fixed in20250116.00-0ubuntu1~20.04.0+esm3USN-8447-3
```
sudo apt-get install --only-upgrade -y google-guest-agent
```

Ubuntu jammy

Source: Ubuntu USN

google-guest-agent→ fixed in20250116.00-0ubuntu1~22.04.3USN-8447-3
```
sudo apt-get install --only-upgrade -y google-guest-agent
```

Ubuntu noble

Source: Ubuntu USN

google-guest-agent→ fixed in20250116.00-0ubuntu1~24.04.4USN-8447-3
```
sudo apt-get install --only-upgrade -y google-guest-agent
```

Ubuntu questing

Source: Ubuntu USN

google-guest-agent→ fixed in20250506.01-0ubuntu1.2USN-8447-3
```
sudo apt-get install --only-upgrade -y google-guest-agent
```

Ubuntu resolute

Source: Ubuntu USN

google-guest-agent→ fixed in20250506.01-0ubuntu2.1USN-8447-3
```
sudo apt-get install --only-upgrade -y google-guest-agent
```

Ubuntu xenial

Source: Ubuntu USN

google-guest-agent→ fixed in20240716.00-0ubuntu1~16.04.0+esm3USN-8447-3
```
sudo apt-get install --only-upgrade -y google-guest-agent
```
lxd→ fixed in2.0.11-0ubuntu1~16.04.4+esm3USN-8447-2
```
sudo apt-get install --only-upgrade -y lxd
```
golang-github-lxc-lxd-dev→ fixed in2.0.11-0ubuntu1~16.04.4+esm3USN-8447-2
```
sudo apt-get install --only-upgrade -y golang-github-lxc-lxd-dev
```
lxc2→ fixed in2.0.11-0ubuntu1~16.04.4+esm3USN-8447-2
```
sudo apt-get install --only-upgrade -y lxc2
```
lxd-client→ fixed in2.0.11-0ubuntu1~16.04.4+esm3USN-8447-2
```
sudo apt-get install --only-upgrade -y lxd-client
```
lxd-tools→ fixed in2.0.11-0ubuntu1~16.04.4+esm3USN-8447-2
```
sudo apt-get install --only-upgrade -y lxd-tools
```

Are YOU affected by CVE-2026-39830?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

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