CVE-2025-55158 Information

Description

Vim is an open source command line text editor. In versions from 9.1.1231 to before 9.1.1406 when processing nested tuples during Vim9 script import operations an error during evaluation can trigger a double-free in Vim’s internal typed value (typval_T) management. Specifically the clear_tv() function may attempt to free memory that has already been deallocated due to improper lifetime handling in the handle_import / ex_import code paths. The vulnerability can only be triggered if a user explicitly opens and executes a specially crafted Vim script. This issue has been patched in version 9.1.1406.

Reference

https://github.com/vim/vim/commit/9772025d24e939fd84b85748ce35c26874c05775 https://github.com/vim/vim/releases/tag/v9.1.1406 https://github.com/vim/vim/security/advisories/GHSA-5fg8-wvx3-583x

Related CNNVD

CNNVD-202508-975 (Published: 2025-08-11)