# CVE-2021-3478: libopenexr22: There's a flaw in OpenEXR's scanline input file functionality in versions before 3.0.0-beta

CVE-2021-3478 is fixed in 3 products on 1 platform, first by libopenexr22 2.2.0-11.1ubuntu1.6, released March 31, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-3478
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0096
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 31, 2021

## Description

There's a flaw in OpenEXR's scanline input file functionality in versions before 3.0.0-beta. An attacker able to submit a crafted file to be processed by OpenEXR could consume excessive system memory. The greatest impact of this flaw is to system availability.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libopenexr22 Ubuntu 18.04.6 LTS (bionic) | 2.2.0-11.1ubuntu1.6 | [libopenexr22 2.2.0-11.1ubuntu1.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libopenexr22-2.2.0-11.1ubuntu1.6.md) | Mar 31, 2021 |
| Linux | libopenexr24 Ubuntu 20.04 LTS (focal) | 2.3.0-6ubuntu0.5 | [libopenexr24 2.3.0-6ubuntu0.5](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libopenexr24-2.3.0-6ubuntu0.5.md) | Mar 31, 2021 |
| Linux | openexr Ubuntu 18.04.6 LTS (bionic) | 2.2.0-11.1ubuntu1.6 | [openexr 2.2.0-11.1ubuntu1.6](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-openexr-2.2.0-11.1ubuntu1.6.md) | Mar 31, 2021 |
| Linux | openexr Ubuntu 20.04 LTS (focal) | 2.3.0-6ubuntu0.5 | [openexr 2.3.0-6ubuntu0.5](https://patchblox.com/security/data/fix/linux/ubuntu-focal-openexr-2.3.0-6ubuntu0.5.md) | Mar 31, 2021 |

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Data as of 2026-11-08T19:12:23Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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