CVE-2025-55158 Vim double-free vulnerability during Vim9 script import operations

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 typvalT management. Specifically, the cleartv...

CVE-2025-55158

CVE-2025-55158 affects Vim before patch release 9.1.1406. In Vim versions 9.1.1231 through 9.1.1405, processing nested tuples during Vim9 script import operations could trigger a double-free in Vim’s internal typval_T management due to improper lifetime handling in handle_import/ex_import paths, ...