Описание
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.
An out-of-bounds write vulnerability in Vim's spell_soundfold_sal() function allows an attacker to corrupt memory and crash the editor (Denial of Service) by supplying a specially crafted word during spell sound-folding.
Отчет
This Moderate impact flaw in Vim's spell sound-folding feature can lead to a denial of service. A local attacker could provide a specially crafted word, causing an out-of-bounds write and crashing the editor. This vulnerability primarily affects interactive users of the Vim text editor.
Меры по смягчению последствий
This vulnerability can be mitigated by preventing Vim from automatically applying editor configurations embedded in files. Add the following line to the global /etc/vimrc or local ~/.vimrc configuration file: set nomodeline
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | vim | Affected | ||
| Red Hat Enterprise Linux 6 | vim | Out of support scope | ||
| Red Hat Enterprise Linux 7 | vim | Out of support scope | ||
| Red Hat Enterprise Linux 8 | vim | Fix deferred | ||
| Red Hat Enterprise Linux 9 | vim | Affected | ||
| Red Hat OpenShift Container Platform 4 | rhcos | Fix deferred | ||
| Red Hat Hardened Images | vim-main-9.2.780-1.hum1 | Fixed | RHSA-2026:35387 | 03.07.2026 |
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Дополнительная информация
Статус:
EPSS
5.5 Medium
CVSS3
Связанные уязвимости
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.
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.
Vim is an open source, command line text editor. Prior to 9.2.0725, th ...
EPSS
5.5 Medium
CVSS3