CVE-2026-73074Vim: Heap Buffer Overflow in Text Property Handling

Description

Vim is an open source, command line text editor. Prior to 9.2.0841, prop_add_one() in src/textprop.c uses the proplen value from get_text_props() to increment a uint16_t property count beyond 0xffff, wrapping the count to zero and copying existing text-property records into a heap allocation sized for none of them. This issue is fixed in version 9.2.0841.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://github.com/vim/vim/security/advisories/GHSA-hm4g-pjfx-m27j PatchVendor Advisory
• https://github.com/vim/vim/commit/a9336b476fd1a182e3f79b5f83c0ffb04f8a922b Patch