CVE-2026-5704 · cross-distro fix matrix

CVE-2026-5704: It was discovered that tar incorrectly handled certain crafted archive files.

Affects 7 Linux releases across 14 (distro × package) combinations. First disclosed: 2026-06-25.

Fix per ecosystem

Each block below is a distro release where CVE-2026-5704 has a known fix. Run the listed command on that distro to remediate.

Ubuntu bionic

Source: Ubuntu USN

tar→ fixed in1.29b-2ubuntu0.4+esm2USN-8477-1
```
sudo apt-get install --only-upgrade -y tar
```
tar-scripts→ fixed in1.29b-2ubuntu0.4+esm2USN-8477-1
```
sudo apt-get install --only-upgrade -y tar-scripts
```

Ubuntu focal

Source: Ubuntu USN

tar→ fixed in1.30+dfsg-7ubuntu0.20.04.4+esm1USN-8477-1
```
sudo apt-get install --only-upgrade -y tar
```
tar-scripts→ fixed in1.30+dfsg-7ubuntu0.20.04.4+esm1USN-8477-1
```
sudo apt-get install --only-upgrade -y tar-scripts
```

Ubuntu jammy

Source: Ubuntu USN

tar→ fixed in1.34+dfsg-1ubuntu0.1.22.04.3USN-8477-1
```
sudo apt-get install --only-upgrade -y tar
```
tar-scripts→ fixed in1.34+dfsg-1ubuntu0.1.22.04.3USN-8477-1
```
sudo apt-get install --only-upgrade -y tar-scripts
```

Ubuntu noble

Source: Ubuntu USN

tar→ fixed in1.35+dfsg-3ubuntu0.1USN-8477-1
```
sudo apt-get install --only-upgrade -y tar
```
tar-scripts→ fixed in1.35+dfsg-3ubuntu0.1USN-8477-1
```
sudo apt-get install --only-upgrade -y tar-scripts
```

Ubuntu resolute

Source: Ubuntu USN

tar→ fixed in1.35+dfsg-4ubuntu0.1USN-8477-1
```
sudo apt-get install --only-upgrade -y tar
```
tar-scripts→ fixed in1.35+dfsg-4ubuntu0.1USN-8477-1
```
sudo apt-get install --only-upgrade -y tar-scripts
```

Ubuntu trusty

Source: Ubuntu USN

tar→ fixed in1.27.1-1ubuntu0.1+esm5USN-8477-1
```
sudo apt-get install --only-upgrade -y tar
```
tar-scripts→ fixed in1.27.1-1ubuntu0.1+esm5USN-8477-1
```
sudo apt-get install --only-upgrade -y tar-scripts
```

Ubuntu xenial

Source: Ubuntu USN

tar→ fixed in1.28-2.1ubuntu0.2+esm4USN-8477-1
```
sudo apt-get install --only-upgrade -y tar
```
tar-scripts→ fixed in1.28-2.1ubuntu0.2+esm4USN-8477-1
```
sudo apt-get install --only-upgrade -y tar-scripts
```

Are YOU affected by CVE-2026-5704?

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

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