Out-of-bounds Write Affecting vim-debuginfo package, versions <2:9.0.2153-1.amzn2.0.11


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.11% (2nd percentile)

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  • Snyk IDSNYK-AMZN2-VIMDEBUGINFO-19456757
  • published1 Sept 2026
  • disclosed9 Jul 2026

Introduced: 9 Jul 2026

CVE-2026-59857  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 vim-debuginfo to version 2:9.0.2153-1.amzn2.0.11 or higher.
This issue was patched in ALAS2-2026-3883.

NVD Description

Note: Versions mentioned in the description apply only to the upstream vim-debuginfo package and not the vim-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

Vim is an open source, command line text editor. Prior to 9.2.0725, the single-byte branch of spell_soundfold_sal() in src/spell.c translates a word through a spell file's SAL sound-folding rules into a caller-owned result buffer, but its result writes are guarded with reslen < MAXWLEN, allowing reslen to reach MAXWLEN before res[reslen] = NUL writes one byte past the end of the MAXWLEN-element stack buffer. A boundary-length word passed to soundfold(), or reached via sound-based spell suggestion while a SAL-based spell language is active under a non-multibyte 8-bit encoding, can corrupt the eval_soundfold() stack frame and crash the editor. This issue is fixed in version 9.2.0725.

CVSS Base Scores

version 3.1