This bug was fixed in the package caribou - 0.4.21-7ubuntu0.20.04.1
--------------- caribou (0.4.21-7ubuntu0.20.04.1) focal-security; urgency=high
* SECURITY UPDATE: Fix segfaults with recent versions of Xorg that causes cinnamon to crash (LP: #1912060) * Fix build with newer versions of valac
-- Fabio Fantoni <email address hidden> Sat, 23 Jan 2021 11:30:08 +0100
This bug was fixed in the package caribou - 0.4.21- 7ubuntu0. 20.04.1
--------------- 7ubuntu0. 20.04.1) focal-security; urgency=high
caribou (0.4.21-
* SECURITY UPDATE: Fix segfaults with recent versions of Xorg that
causes cinnamon to crash (LP: #1912060)
* Fix build with newer versions of valac
-- Fabio Fantoni <email address hidden> Sat, 23 Jan 2021 11:30:08 +0100