Out-of-bounds Write The advisory has been revoked - it doesn't affect any version of package vim-filesystem (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL10-VIMFILESYSTEM-17698159
- published30 Jun 2026
- disclosed25 Jun 2026
Introduced: 25 Jun 2026
CVE-2026-55892 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream vim-filesystem package and not the vim-filesystem package as distributed by RHEL.
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
- https://bugzilla.redhat.com/show_bug.cgi?id=2492975
- https://access.redhat.com/security/cve/CVE-2026-55892
- https://access.redhat.com/errata/RHSA-2026:35387
- https://access.redhat.com/errata/RHSA-2026:66336
- https://github.com/vim/vim/commit/8325b193bba5f01e7a7d8241f
- https://github.com/vim/vim/releases/tag/v9.2.0662
- https://github.com/vim/vim/security/advisories/GHSA-qm9w-fmpj-879h