CVE-2021-4216 · cross-distro fix matrix

CVE-2021-4216: A Floating point exception (division-by-zero) flaw was found in Mupdf for zero width pages in muraster.c. It is fixed in Mupdf-1.20.0-rc1 upstream.

Affects 2 Linux releases across 2 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-4216 has a known fix. Run the listed command on that distro to remediate.

Debian bookworm

Source: Debian Security Tracker

mupdf→ fixed in1.20.0+ds1-1urgency: unimportant
```
sudo apt-get install --only-upgrade -y mupdf
```

Debian trixie

Source: Debian Security Tracker

mupdf→ fixed in1.20.0+ds1-1urgency: unimportant
```
sudo apt-get install --only-upgrade -y mupdf
```

Are YOU affected by CVE-2021-4216?

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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