Vim is an open source, command line text editor. Prior to 9.2.0662, the dump_prefixes() function in src/spell.c walks a spell-file prefix trie iteratively with a depth counter while dumping the prefixes that apply to a word. The counter is bounded only by the trie structure itself; it is never checked against the size of the fixed MAXWLEN-element stack arrays it indexes (prefix[], arridx[], curi[]). A crafted .spl file, loaded when the user dumps the word list, can drive the descent arbitrarily deep, so the function writes past the end of those arrays. This is a stack out-of-bounds write that corrupts the call frame and crashes the editor. This vulnerability is fixed in 9.2.0662.
References
| Link | Resource |
|---|---|
| https://github.com/vim/vim/commit/8325b193bba5f01e7a7d8241f | Patch |
| https://github.com/vim/vim/releases/tag/v9.2.0662 | Product |
| https://github.com/vim/vim/security/advisories/GHSA-qm9w-fmpj-879h | Vendor Advisory |
Configurations
History
26 Jun 2026, 03:53
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:vim:vim:*:*:*:*:*:*:*:* | |
| First Time |
Vim vim
Vim |
|
| References | () https://github.com/vim/vim/commit/8325b193bba5f01e7a7d8241f - Patch | |
| References | () https://github.com/vim/vim/releases/tag/v9.2.0662 - Product | |
| References | () https://github.com/vim/vim/security/advisories/GHSA-qm9w-fmpj-879h - Vendor Advisory |
25 Jun 2026, 16:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-06-25 16:16
Updated : 2026-06-26 03:53
NVD link : CVE-2026-55892
Mitre link : CVE-2026-55892
CVE.ORG link : CVE-2026-55892
JSON object : View
Products Affected
vim
- vim
CWE
CWE-787
Out-of-bounds Write