Vim is an open source, command line text editor. From 9.2.0469 until 9.2.0843, popup_mark_opacity_zindex() in src/popupwin.c can use a negative w_winrow for a text-property-anchored popup with clipwindow and opacity, indexing before the screen array instead of accounting for w_popup_topoff and causing an out-of-bounds read and conditional write. This issue is fixed in version 9.2.0843.
Weakness
The product writes to a buffer using an index or pointer that references a memory location prior to the beginning of the buffer.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Vim | Ubuntu | upstream | * |