# CVE-2021-40400: gerbv: An out-of-bounds read vulnerability exists in the RS-274X aperture macro outline primitive functionality of Gerbv 2.7...

CVE-2021-40400 is fixed in gerbv on 1 platform, first by gerbv 2.6.1-3ubuntu0.1~esm1, released April 14, 2022. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2021-40400
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0129
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 14, 2022

## Description

An out-of-bounds read vulnerability exists in the RS-274X aperture macro outline primitive functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and the forked version of Gerbv (commit d7f42a9a). A specially-crafted Gerber file can lead to information disclosure. An attacker can provide a malicious file to trigger this vulnerability.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gerbv Debian 12.15 (bookworm) | 2.9.2-1 | [DEBIAN-CVE-2021-40400](https://patchblox.com/security/data/fix/linux/debian-cve-2021-40400.md) | Apr 14, 2022 |
| Linux | gerbv Debian 13.5 (trixie) | 2.9.2-1 | [DEBIAN-CVE-2021-40400](https://patchblox.com/security/data/fix/linux/debian-cve-2021-40400.md) | Apr 14, 2022 |
| Linux | gerbv Ubuntu 18.04.6 LTS (bionic) | 2.6.1-3ubuntu0.1~esm1 | [gerbv 2.6.1-3ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-gerbv-2.6.1-3ubuntu0.1-esm1.md) | Apr 14, 2022 |
| Linux | gerbv Ubuntu 20.04 LTS (focal) | 2.7.0-1ubuntu0.1 | [gerbv 2.7.0-1ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-gerbv-2.7.0-1ubuntu0.1.md) | Apr 14, 2022 |
| Linux | gerbv Ubuntu 22.04.1 LTS (jammy) | 2.8.2-1ubuntu0.1~esm1 | [gerbv 2.8.2-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gerbv-2.8.2-1ubuntu0.1-esm1.md) | Apr 14, 2022 |

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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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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