CVE-2021-4156 · cross-distro fix matrix

CVE-2021-4156: An out-of-bounds read flaw was found in libsndfile's FLAC codec functionality. An attacker who is able to submit a specially crafted file (via tricking a user to open or otherwise) to an application linked with libsndfile and using the FLAC codec, could trigger an out-of-bounds read that would most

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-4156 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

libsndfile→ fixed in1.0.31-2+deb11u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libsndfile
```

Debian bookworm

Source: Debian Security Tracker

libsndfile→ fixed in1.1.0-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libsndfile
```

Debian trixie

Source: Debian Security Tracker

libsndfile→ fixed in1.1.0-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libsndfile
```

Are YOU affected by CVE-2021-4156?

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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