CVE-2021-21834 · cross-distro fix matrix

CVE-2021-21834: An exploitable integer overflow vulnerability exists within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. A specially crafted MPEG-4 input when decoding the atom for the “co64” FOURCC can cause an integer overflow due to unchecked arithmetic resulting in a

Affects 1 Linux release across 1 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-21834 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

gpac→ fixed in1.0.1+dfsg1-4+deb11u1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y gpac
```

Are YOU affected by CVE-2021-21834?

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

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