CVE-2025-24014: segmentation fault in win_line() in Vim < 9.1.1043
Description
Vim is an open source, command line text editor. A segmentation fault was found in Vim before 9.1.1043. In silent Ex mode (-s -e), Vim typically doesn't show a screen and just operates silently in batch mode. However, it is still possible to trigger the function that handles the scrolling of a gui version of Vim by feeding some binary characters to Vim. The function that handles the scrolling however may be triggering a redraw, which will access the ScreenLines pointer, even so this variable hasn't been allocated (since there is no screen). This vulnerability is fixed in 9.1.1043.
Classification
CVE ID: CVE-2025-24014
CVSS Base Severity: MEDIUM
CVSS Base Score: 4.2
Affected Products
Vendor: vim
Product: vim
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.04% (probability of being exploited)
EPSS Percentile: 11.68% (scored less or equal to compared to others)
EPSS Date: 2025-02-18 (when was this score calculated)
References
https://github.com/vim/vim/security/advisories/GHSA-j3g9-wg22-v955https://github.com/vim/vim/commit/9d1bed5eccdbb46a26b8a484f5e9163c40e63919