CVE-2021-3481 · cross-distro fix matrix

CVE-2021-3481: It was discovered that QtSvg incorrectly handled certain SVG images. An

Affects 7 Linux releases across 27 (distro × package) combinations. First disclosed: 2026-05-28.

Fix per ecosystem

Each block below is a distro release where CVE-2021-3481 has a known fix. Run the listed command on that distro to remediate.

Ubuntu bionic

Source: Ubuntu USN

qtsvg-opensource-src→ fixed in5.9.5-0ubuntu1.1+esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y qtsvg-opensource-src
```
libqt5svg5→ fixed in5.9.5-0ubuntu1.1+esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y libqt5svg5
```
libqt5svg5-dev→ fixed in5.9.5-0ubuntu1.1+esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y libqt5svg5-dev
```
qtsvg5-doc→ fixed in5.9.5-0ubuntu1.1+esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y qtsvg5-doc
```
qtsvg5-doc-html→ fixed in5.9.5-0ubuntu1.1+esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y qtsvg5-doc-html
```
qtsvg5-examples→ fixed in5.9.5-0ubuntu1.1+esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y qtsvg5-examples
```

Ubuntu focal

Source: Ubuntu USN

qtsvg-opensource-src→ fixed in5.12.8-0ubuntu1+esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y qtsvg-opensource-src
```
libqt5svg5→ fixed in5.12.8-0ubuntu1+esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y libqt5svg5
```
libqt5svg5-dev→ fixed in5.12.8-0ubuntu1+esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y libqt5svg5-dev
```
qtsvg5-doc→ fixed in5.12.8-0ubuntu1+esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y qtsvg5-doc
```
qtsvg5-doc-html→ fixed in5.12.8-0ubuntu1+esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y qtsvg5-doc-html
```
qtsvg5-examples→ fixed in5.12.8-0ubuntu1+esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y qtsvg5-examples
```

Ubuntu jammy

Source: Ubuntu USN

qtsvg-opensource-src→ fixed in5.15.3-1ubuntu0.1~esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y qtsvg-opensource-src
```
libqt5svg5→ fixed in5.15.3-1ubuntu0.1~esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y libqt5svg5
```
libqt5svg5-dev→ fixed in5.15.3-1ubuntu0.1~esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y libqt5svg5-dev
```
qtsvg5-doc→ fixed in5.15.3-1ubuntu0.1~esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y qtsvg5-doc
```
qtsvg5-doc-html→ fixed in5.15.3-1ubuntu0.1~esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y qtsvg5-doc-html
```
qtsvg5-examples→ fixed in5.15.3-1ubuntu0.1~esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y qtsvg5-examples
```

Ubuntu xenial

Source: Ubuntu USN

qtsvg-opensource-src→ fixed in5.5.1-2ubuntu0.1~esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y qtsvg-opensource-src
```
libqt5svg5→ fixed in5.5.1-2ubuntu0.1~esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y libqt5svg5
```
libqt5svg5-dev→ fixed in5.5.1-2ubuntu0.1~esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y libqt5svg5-dev
```
qtsvg5-doc→ fixed in5.5.1-2ubuntu0.1~esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y qtsvg5-doc
```
qtsvg5-doc-html→ fixed in5.5.1-2ubuntu0.1~esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y qtsvg5-doc-html
```
qtsvg5-examples→ fixed in5.5.1-2ubuntu0.1~esm1USN-8337-1
```
sudo apt-get install --only-upgrade -y qtsvg5-examples
```

Debian bullseye

Source: Debian Security Tracker

qtsvg-opensource-src→ fixed in5.15.2-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y qtsvg-opensource-src
```

Debian bookworm

Source: Debian Security Tracker

qtsvg-opensource-src→ fixed in5.15.2-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y qtsvg-opensource-src
```

Debian trixie

Source: Debian Security Tracker

qtsvg-opensource-src→ fixed in5.15.2-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y qtsvg-opensource-src
```

Are YOU affected by CVE-2021-3481?

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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Continuous monitoring beats manual checking

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