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CVE-2021-40401

A use-after-free vulnerability exists in the RS-274X aperture definition tokenization...

10.0 CriticalFix available

A use-after-free vulnerability exists in the RS-274X aperture definition tokenization functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and Gerbv forked 2.7.1. A specially-crafted gerber file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
Low
Availability
High

Exploit likelihood

1.32%Down 1.2 points since Feb 8, 2022
90%50%10%1%

What each source reports

CVE List Score used 10.0

A use-after-free vulnerability exists in the RS-274X aperture definition tokenization functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and Gerbv forked 2.7.1. A specially-crafted gerber file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

Record
CVE-2021-40401
CVSS 3.0
10.0 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H
Weakness
CWE-252
Updated
2026-11-02
EUVDEUVD-2021-27578 10.0

A use-after-free vulnerability exists in the RS-274X aperture definition tokenization functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and Gerbv forked 2.7.1. A specially-crafted gerber file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

Record
EUVD-2021-27578
CVSS 3.0
10.0 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-x68j-pwcm-v888 7.8

A use-after-free vulnerability exists in the RS-274X aperture definition tokenization...

A use-after-free vulnerability exists in the RS-274X aperture definition tokenization functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and Gerbv forked 2.7.1. A specially-crafted gerber file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

Record
GHSA-x68j-pwcm-v888
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-252, CWE-416
Updated
2026-11-02
NVD 8.6

A use-after-free vulnerability exists in the RS-274X aperture definition tokenization functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and Gerbv forked 2.7.1. A specially-crafted gerber file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

Record
CVE-2021-40401
CVSS 3.1
8.6 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS 3.0
10.0 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-252
Updated
2026-11-02
OSV 8.6

A use-after-free vulnerability exists in the RS-274X aperture definition tokenization functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and Gerbv forked 2.7.1. A specially-crafted gerber file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

Record
CVE-2021-40401
CVSS 3.1
8.6 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2021-40401 8.6

A use-after-free vulnerability exists in the RS-274X aperture definition tokenization functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and Gerbv forked 2.7.1. A specially-crafted gerber file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

Record
DEBIAN-CVE-2021-40401
CVSS 3.1
8.6 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Updated
2026-11-02
Show 4 moreShow less
OSVUBUNTU-CVE-2021-40401 8.6

A use-after-free vulnerability exists in the RS-274X aperture definition tokenization functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and Gerbv forked 2.7.1. A specially-crafted gerber file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

Record
UBUNTU-CVE-2021-40401
CVSS 3.1
8.6 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS 3.0
10.0 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:H
Updated
2026-11-02
OSVMGASA-2022-0260 No score

Updated gerbv packages fix security vulnerability

An out-of-bounds write vulnerability exists in the drill format T-code tool number functionality of Gerbv 2.7.0, dev (commit b5f1eacd), and the forked version of Gerbv (commit 71493260). (CVE-2021-40391)

An out-of-bounds write vulnerability exists in the RS-274X aperture macro variables handling functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and the forked version of Gerbv (commit 71493260). (CVE-2021-40393, CVE-2021-40394)

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). (CVE-2021-40400)

A use-after-free vulnerability exists in the RS-274X aperture definition tokenization functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and Gerbv forked 2.7.1. (CVE-2021-40401)

Record
MGASA-2022-0260
Updated
2026-11-02
OSVopenSUSE-SU-2024:12527-1 No score

gerbv-2.9.4-1.1 on GA media

These are all security issues fixed in the gerbv-2.9.4-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:12527-1
Updated
2026-11-02
OSVUSN-6209-1 No score

Gerbv vulnerabilities

Claudio Bozzato discovered that Gerbv incorrectly handled certain Gerber files. An attacker could possibly use this issue to crash Gerbv (resulting in a denial of service), or execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2021-40391, CVE-2021-40394)

Claudio Bozzato discovered that Gerbv incorrectly handled certain Gerber files. An attacker could possibly use this issue to disclose information, crash Gerbv (resulting in a denial of service), or execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2021-40393)

Claudio Bozzato discovered that Gerbv incorrectly handled certain Gerber files. An attacker could possibly use this issue to disclose information. (CVE-2021-40400, CVE-2021-40403)

Claudio Bozzato discovered that Gerbv incorrectly handled certain Gerber files. An attacker could possibly use this issue to disclose information, crash Gerbv (resulting in a denial of service), or execute arbitrary code. (CVE-2021-40401)

Record
USN-6209-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
gerbv
Debian:12
 before 2.9.2-1
2.9.2-1
gerbv
Debian:13
 before 2.9.2-1
2.9.2-1
gerbv
Debian:10
From an advisory covering 2 CVEs
 before 2.7.0-1+deb10u2, plus listed versions
2.7.0-12.7.0-1+deb10u1
2.7.0-1+deb10u2
gerbv
Debian:11
From an advisory covering 4 CVEs
 before 2.7.0-2+deb11u2, plus listed versions
2.7.0-22.7.0-2+deb11u1
2.7.0-2+deb11u2
gerbv
Mageia:8
From an advisory covering 5 CVEs
 before 2.7.3-1.mga8
2.7.3-1.mga8
gerbv
Ubuntu:Pro:14.04:LTS
 before 2.6.0-1ubuntu0.14.04.1~esm1, plus listed versions
2.6.0-1
2.6.0-1ubuntu0.14.04.1~esm1
gerbv
Ubuntu:Pro:16.04:LTS
 before 2.6.0-1ubuntu0.16.04.1~esm1, plus listed versions
2.6.0-1
2.6.0-1ubuntu0.16.04.1~esm1
gerbv
Ubuntu:Pro:18.04:LTS
 before 2.6.1-3ubuntu0.1~esm1, plus listed versions
2.6.1-22.6.1-3
2.6.1-3ubuntu0.1~esm1
gerbv
Ubuntu:20.04:LTS
 before 2.7.0-1ubuntu0.1, plus listed versions
2.7.0-1
2.7.0-1ubuntu0.1
gerbv
Ubuntu:Pro:22.04:LTS
 before 2.8.2-1ubuntu0.1~esm1, plus listed versions
2.7.0-22.7.1-12.8.0-12.8.1-12.8.2-1
2.8.2-1ubuntu0.1~esm1
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Affected packages
PackageAffectedFixed
gerbv
Ubuntu:Pro:14.04:LTS
From an advisory covering 6 CVEs
 before 2.6.0-1ubuntu0.14.04.1~esm1, plus listed versions
2.6.0-1
2.6.0-1ubuntu0.14.04.1~esm1
gerbv
Ubuntu:Pro:16.04:LTS
From an advisory covering 6 CVEs
 before 2.6.0-1ubuntu0.16.04.1~esm1, plus listed versions
2.6.0-1
2.6.0-1ubuntu0.16.04.1~esm1
gerbv
Ubuntu:Pro:18.04:LTS
From an advisory covering 6 CVEs
 before 2.6.1-3ubuntu0.1~esm1, plus listed versions
2.6.1-22.6.1-3
2.6.1-3ubuntu0.1~esm1
gerbv
Ubuntu:20.04:LTS
From an advisory covering 6 CVEs
 before 2.7.0-1ubuntu0.1, plus listed versions
2.7.0-1
2.7.0-1ubuntu0.1
gerbv
Ubuntu:Pro:22.04:LTS
From an advisory covering 6 CVEs
 before 2.8.2-1ubuntu0.1~esm1, plus listed versions
2.7.0-22.7.1-12.8.0-12.8.1-12.8.2-1
2.8.2-1ubuntu0.1~esm1

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-40401 is a critical vulnerability (CVSS 10.0) in Gerbv, published February 4, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.32%, the 71st percentile. Fixed in gerbv 2.9.2-1.

References

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