# CVE-2021-40572: gpac: The binary MP4Box in Gpac 1.0.1 has a double-free bug in the av1dmx_finalize function in reframe_av1.c, which allows...

CVE-2021-40572 is fixed in gpac on 1 platform by DEBIAN-CVE-2021-40572 (version 1.0.1+dfsg1-4+deb11u2), released January 13, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-40572
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0094
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jan 13, 2022

## Description

The binary MP4Box in Gpac 1.0.1 has a double-free bug in the av1dmx_finalize function in reframe_av1.c, which allows attackers to cause a denial of service.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gpac Debian 11.6 (bullseye) | 1.0.1+dfsg1-4+deb11u2 | [DEBIAN-CVE-2021-40572](https://patchblox.com/security/data/fix/linux/debian-cve-2021-40572.md) | Jan 13, 2022 |

---

Data as of 2026-11-09T13:31:49Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.