CVE-2021-39516 · cross-distro fix matrix

CVE-2021-39516: An issue was discovered in libjpeg through 2020021. A NULL pointer dereference exists in the function HuffmanDecoder::Get() located in huffmandecoder.hpp. It allows an attacker to cause Denial of Service.

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-39516 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

libjpeg→ fixed in0.0~git20200925.f145908-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libjpeg
```

Debian bookworm

Source: Debian Security Tracker

libjpeg→ fixed in0.0~git20200925.f145908-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libjpeg
```

Debian trixie

Source: Debian Security Tracker

libjpeg→ fixed in0.0~git20200925.f145908-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libjpeg
```

Are YOU affected by CVE-2021-39516?

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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