Off-by-one Error Affecting emacs-terminal package, versions <1:28.2-3.amzn2023.0.12


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.15% (4th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2023-EMACSTERMINAL-20863439
  • published13 Oct 2026
  • disclosed22 Apr 2026

Introduced: 22 Apr 2026

CVE-2026-6861  (opens in a new tab)
CWE-193  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 emacs-terminal to version 1:28.2-3.amzn2023.0.12 or higher.
This issue was patched in ALAS2023-2026-3195.

NVD Description

Note: Versions mentioned in the description apply only to the upstream emacs-terminal package and not the emacs-terminal package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

A flaw was found in GNU Emacs. This vulnerability, a memory corruption issue, occurs when Emacs processes specially crafted SVG (Scalable Vector Graphics) CSS (Cascading Style Sheets) data. A local user could exploit this by convincing a victim to open a malicious SVG file, which may lead to a denial of service (DoS) or potentially information disclosure.

CVSS Base Scores

version 3.1