CVE-2020-27818 · cross-distro fix matrix

CVE-2020-27818: A flaw was found in the check_chunk_name() function of pngcheck-2.4.0. An attacker able to pass a malicious file to be processed by pngcheck could cause a temporary denial of service, posing a low risk to application availability.

Affects 3 Linux releases across 3 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2020-27818 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

pngcheck→ fixed in2.3.0-13urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y pngcheck
```

Debian bookworm

Source: Debian Security Tracker

pngcheck→ fixed in2.3.0-13urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y pngcheck
```

Debian trixie

Source: Debian Security Tracker

pngcheck→ fixed in2.3.0-13urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y pngcheck
```

Are YOU affected by CVE-2020-27818?

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.

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