CVE catalog
CVE-2021-21840
UBUNTU-CVE-2021-21840
- Severity
- Unknown
- Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 1.70% · Oct 25, 2026
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 used to process an atom using the “saio” FOURCC code cause an integer overflow due to unchecked arithmetic resulting in a heap-based buffer overflow that causes memory corruption. An attacker can convince a user to open a video to trigger this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | gpac | 11 | 1.0.1+dfsg1-4 | vulnerable |
| Debian | gpac | 11 | 1.0.1+dfsg1-4+deb11u1 | fixed |
| Ubuntu | gpac | pro | 2.2.1+dfsg1-3 | vulnerable |
| Ubuntu | gpac | pro | 2.2.1+dfsg1-3.1 | vulnerable |
| Ubuntu | gpac | pro | 2.2.1+dfsg1-3.1build1 | vulnerable |
| Ubuntu | gpac | pro | 2.2.1+dfsg1-3.1build2 | vulnerable |
| Ubuntu | gpac | pro | 2.2.1+dfsg1-3.1ubuntu0.1~esm2 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | gpac | deb | 11 | 1.0.1+dfsg1-4+deb11u1 | Not reported | DEBIAN-CVE-2021-21840 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed: