Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| vim / vim | affected < 9.2.0662 |
CWE
CWE-787
References
- https://github.com/vim/vim/security/advisories/GHSA-qm9w-fmpj-879h
- https://github.com/vim/vim/commit/8325b193bba5f01e7a7d8241f
- https://github.com/vim/vim/releases/tag/v9.2.0662
ADP enrichment
No English description supplied.
No references supplied.