Haha. Xorg fixes CVE-2020-25712.
This exposes a bug in libcaribou, used by the Cinnamon on-screen keyboard. It crashes the parent process when "ē" is pressed.
In current versions of Cinnamon, this kills cinnamon-screensaver, unlocking the screen. Also caribou is unmaintained (Gnome used to be the upstream, but doesn't make use of the library anymore).
https://github.com/linuxmint/cinnamon-screensaver/issues/354
(This was originally linked from a recent post that I now can't find anymore in my timeline...)
@galaxis there's a heritage JWZ rant about this somewhere
@galaxis: Mal wieder Zeit für den Hinweis auf https://www.jwz.org/blog/2015/04/i-told-you-so-again/ oder https://www.jwz.org/blog/2011/10/has-gnome-3-decided-that-people-shouldnt-want-screen-savers/ oder https://www.jwz.org/blog/2014/04/the-awful-thing-about-getting-it-right-the-first-time-is-that-nobody-realizes-how-hard-it-was/
@goetz Gerade aktualisiert worden: https://www.jwz.org/blog/2021/01/i-told-you-so-2021-edition/
@galaxis ё is a very appropriate letter for that~