CVE-2026-10846 · cross-distro fix matrix

CVE-2026-10846: Pablo Ruiz discovered that ldns did not properly validate DNS

Affects 7 Linux releases across 33 (distro × package) combinations. First disclosed: 2026-06-10.

Fix per ecosystem

Each block below is a distro release where CVE-2026-10846 has a known fix. Run the listed command on that distro to remediate.

Ubuntu bionic

Source: Ubuntu USN

ldns→ fixed in1.7.0-3ubuntu4.1+esm1USN-8449-1
```
sudo apt-get install --only-upgrade -y ldns
```
ldnsutils→ fixed in1.7.0-3ubuntu4.1+esm1USN-8449-1
```
sudo apt-get install --only-upgrade -y ldnsutils
```
libldns-dev→ fixed in1.7.0-3ubuntu4.1+esm1USN-8449-1
```
sudo apt-get install --only-upgrade -y libldns-dev
```
libldns2→ fixed in1.7.0-3ubuntu4.1+esm1USN-8449-1
```
sudo apt-get install --only-upgrade -y libldns2
```
python-ldns→ fixed in1.7.0-3ubuntu4.1+esm1USN-8449-1
```
sudo apt-get install --only-upgrade -y python-ldns
```
python3-ldns→ fixed in1.7.0-3ubuntu4.1+esm1USN-8449-1
```
sudo apt-get install --only-upgrade -y python3-ldns
```

Ubuntu focal

Source: Ubuntu USN

ldns→ fixed in1.7.0-4.1ubuntu1+esm2USN-8449-1
```
sudo apt-get install --only-upgrade -y ldns
```
ldnsutils→ fixed in1.7.0-4.1ubuntu1+esm2USN-8449-1
```
sudo apt-get install --only-upgrade -y ldnsutils
```
libldns-dev→ fixed in1.7.0-4.1ubuntu1+esm2USN-8449-1
```
sudo apt-get install --only-upgrade -y libldns-dev
```
libldns2→ fixed in1.7.0-4.1ubuntu1+esm2USN-8449-1
```
sudo apt-get install --only-upgrade -y libldns2
```
python-ldns→ fixed in1.7.0-4.1ubuntu1+esm2USN-8449-1
```
sudo apt-get install --only-upgrade -y python-ldns
```
python3-ldns→ fixed in1.7.0-4.1ubuntu1+esm2USN-8449-1
```
sudo apt-get install --only-upgrade -y python3-ldns
```

Ubuntu jammy

Source: Ubuntu USN

ldns→ fixed in1.7.1-2ubuntu4+esm2USN-8449-1
```
sudo apt-get install --only-upgrade -y ldns
```
ldnsutils→ fixed in1.7.1-2ubuntu4+esm2USN-8449-1
```
sudo apt-get install --only-upgrade -y ldnsutils
```
libldns-dev→ fixed in1.7.1-2ubuntu4+esm2USN-8449-1
```
sudo apt-get install --only-upgrade -y libldns-dev
```
libldns3→ fixed in1.7.1-2ubuntu4+esm2USN-8449-1
```
sudo apt-get install --only-upgrade -y libldns3
```
python3-ldns→ fixed in1.7.1-2ubuntu4+esm2USN-8449-1
```
sudo apt-get install --only-upgrade -y python3-ldns
```

Ubuntu noble

Source: Ubuntu USN

ldns→ fixed in1.8.3-2ubuntu0.1~esm1USN-8449-1
```
sudo apt-get install --only-upgrade -y ldns
```
ldnsutils→ fixed in1.8.3-2ubuntu0.1~esm1USN-8449-1
```
sudo apt-get install --only-upgrade -y ldnsutils
```
libldns-dev→ fixed in1.8.3-2ubuntu0.1~esm1USN-8449-1
```
sudo apt-get install --only-upgrade -y libldns-dev
```
libldns3t64→ fixed in1.8.3-2ubuntu0.1~esm1USN-8449-1
```
sudo apt-get install --only-upgrade -y libldns3t64
```
python3-ldns→ fixed in1.8.3-2ubuntu0.1~esm1USN-8449-1
```
sudo apt-get install --only-upgrade -y python3-ldns
```

Ubuntu resolute

Source: Ubuntu USN

ldns→ fixed in1.8.4-2ubuntu0.26.04.1~esm1USN-8449-1
```
sudo apt-get install --only-upgrade -y ldns
```
ldnsutils→ fixed in1.8.4-2ubuntu0.26.04.1~esm1USN-8449-1
```
sudo apt-get install --only-upgrade -y ldnsutils
```
libldns-dev→ fixed in1.8.4-2ubuntu0.26.04.1~esm1USN-8449-1
```
sudo apt-get install --only-upgrade -y libldns-dev
```
libldns3t64→ fixed in1.8.4-2ubuntu0.26.04.1~esm1USN-8449-1
```
sudo apt-get install --only-upgrade -y libldns3t64
```
python3-ldns→ fixed in1.8.4-2ubuntu0.26.04.1~esm1USN-8449-1
```
sudo apt-get install --only-upgrade -y python3-ldns
```

Ubuntu xenial

Source: Ubuntu USN

ldns→ fixed in1.6.17-8ubuntu0.1+esm2USN-8449-1
```
sudo apt-get install --only-upgrade -y ldns
```
ldnsutils→ fixed in1.6.17-8ubuntu0.1+esm2USN-8449-1
```
sudo apt-get install --only-upgrade -y ldnsutils
```
libldns-dev→ fixed in1.6.17-8ubuntu0.1+esm2USN-8449-1
```
sudo apt-get install --only-upgrade -y libldns-dev
```
libldns1→ fixed in1.6.17-8ubuntu0.1+esm2USN-8449-1
```
sudo apt-get install --only-upgrade -y libldns1
```
python-ldns→ fixed in1.6.17-8ubuntu0.1+esm2USN-8449-1
```
sudo apt-get install --only-upgrade -y python-ldns
```

Alpine edge

Source: Alpine secdb

ldns→ fixed in1.9.2-r0
```
apk update && apk add --upgrade ldns
```

Are YOU affected by CVE-2026-10846?

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