Buffer Underflow Affecting vim-debugsource package, versions <2:9.2.240-1.amzn2023.0.2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.01% (1st percentile)

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  • Snyk IDSNYK-AMZN2023-VIMDEBUGSOURCE-16067553
  • published15 Apr 2026
  • disclosed27 Feb 2026

Introduced: 27 Feb 2026

CVE-2026-28419  (opens in a new tab)
CWE-124  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 vim-debugsource to version 2:9.2.240-1.amzn2023.0.2 or higher.
This issue was patched in ALAS2023-2026-1584.

NVD Description

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

Vim is an open source, command line text editor. Prior to version 9.2.0075, a heap-based buffer underflow exists in Vim's Emacs-style tags file parsing logic. When processing a malformed tags file where a delimiter appears at the start of a line, Vim attempts to read memory immediately preceding the allocated buffer. Version 9.2.0075 fixes the issue.

CVSS Base Scores

version 3.1