vulnerability
Arch Linux: Insufficient validation (CVE-2021-31535)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:L/Au:N/C:P/I:P/A:P) | May 27, 2021 | Jul 11, 2025 | Mar 25, 2026 |
Severity
7
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
May 27, 2021
Added
Jul 11, 2025
Modified
Mar 25, 2026
Description
A security issue has been found in libx11 before version 1.7.1. XLookupColor() and other X libraries function lack proper validation of the length of their string parameters. If those parameters can be controlled by an external application (for instance a color name that can be emitted via a terminal control sequence) it can lead to the emission of extra X protocol requests to the X server.
Solution
arch-linux-upgrade-latest
References
Rapid7 Labs
2026 Global Threat Landscape Report
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