Threats Tagged 'cve-2026-33642'

This security update for the kitty terminal emulator addresses multiple issues including regressions in Wayland support, memory leaks, crashes, and usability improvements. The update spans versions 0.48.0 through 0.48.2 and fixes bugs such as broken drag and drop on Plasma, a memory leak introduced in version 0.40.0, and various Wayland compositor compatibility problems. No explicit security vulnerability details or exploit information are provided in the update notes.

Kitty is a cross-platform GPU based terminal. In versions 0.46.2 and below, the handle_compose_command() function in kitty/graphics.c performs bounds validation on composition offsets using unsigned 32-bit arithmetic that is subject to integer wrapping, potentially leading to Heap Buffer Over-Read/Write. An attacker who can write escape sequences to a kitty terminal (e.g., via a malicious file, SSH login banner, or piped content) can supply crafted x_offset/y_offset values that pass the bounds check after wrapping but cause massive out-of-bounds heap memory access in compose_rectangles(). No user interaction is required. No non-default configuration is required. The attacker only needs the ability to produce output in a kitty terminal window. This issue has been fixed in version 0.47.0.