SB2026073022 - Red Hat Enterprise Linux 8 update for vim

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Main Vulnerability Database SB2026073022

SB2026073022 - Red Hat Enterprise Linux 8 update for vim

Published: July 30, 2026

Security Bulletin ID SB2026073022
CSH Severity
High
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 25% Medium 50% Low 25%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Out-of-bounds write (CVE-ID: CVE-2026-57455)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to out-of-bounds write in the single-byte branch of spell_soundfold_sofo() in src/spell.c when processing an over-long word through SOFO sound-folding. A local user can supply a specially crafted over-long word to cause a denial of service.

The vulnerable path is only reached under a non-multibyte 8-bit encoding such as latin1, with spell checking enabled for a language that uses a SOFO sound-folding table.


2) Code Injection (CVE-ID: CVE-2026-57456)

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to improper control of code generation in Python omni-completion docstring handling in runtime/autoload/python3complete.vim and pythoncomplete.vim when processing a hostile Python buffer during omni-completion. A remote attacker can craft a malicious docstring and convince a user to trigger Python omni-completion to execute arbitrary code.

User interaction is required to open or edit a hostile Python buffer and trigger Python omni-completion. Only builds with +python3 or +python support are affected.


3) Out-of-bounds write (CVE-ID: CVE-2026-55693)

CWE-ID: CWE-787 - Out-of-bounds write

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to out-of-bounds write in the tree_count_words() function in src/spellfile.c when parsing a crafted .spl/.sug spell file pair during spell suggestion loading. A remote attacker can supply a specially crafted spell file pair to cause a denial of service.

User interaction is required: spell checking must be enabled and the user must invoke spell suggestion on a misspelled word.


4) Code Injection (CVE-ID: CVE-2026-59858)

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to improper neutralization of special elements in the C omni-completion script in runtime/autoload/ccomplete.vim when processing type information from a tags entry during omni-completion. A local user can supply a crafted tags entry and trick the victim into invoking C omni-completion on a hostile .c file to execute arbitrary code.

User interaction is required to open a hostile .c file and invoke omni-completion on a structure-member access, and the issue is reachable only when filetype plugins are enabled and a reachable tags file is used.


Remediation

Install update from vendor's website.

References