CVE-2021-40656 · cross-distro fix matrix

CVE-2021-40656: libsixel before 1.10 is vulnerable to Buffer Overflow in libsixel/src/quant.c:867.

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-40656 has a known fix. Run the listed command on that distro to remediate.

Debian bookworm

Source: Debian Security Tracker

libsixel→ fixed in1.10.3-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libsixel
```

Debian trixie

Source: Debian Security Tracker

libsixel→ fixed in1.10.3-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libsixel
```

Are YOU affected by CVE-2021-40656?

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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