| Name | CVE-2021-3567 | 
| Description | A flaw was found in Caribou due to a regression of CVE-2020-25712 fix. An attacker could use this flaw to bypass screen-locking applications that leverage Caribou as an input mechanism. The highest threat from this vulnerability is to system availability. | 
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) | 
| Debian Bugs | 980061 | 
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status | 
|---|
| caribou (PTS) | bullseye | 0.4.21-7.1 | fixed | 
 | bookworm | 0.4.21-8 | fixed | 
 | forky, sid, trixie | 0.4.21-10 | fixed | 
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs | 
|---|
| caribou | source | stretch | (not affected) |  |  |  | 
| caribou | source | buster | (not affected) |  |  |  | 
| caribou | source | (unstable) | 0.4.21-7.1 |  |  | 980061 | 
Notes
[buster] - caribou <not-affected> (Security impact only with cinnamon-screensaver >= 4.2)
[stretch] - caribou <not-affected> (Security impact only with cinnamon-screensaver >= 4.2)
https://bugs.launchpad.net/ubuntu/+source/caribou/+bug/1912060
https://gitlab.gnome.org/GNOME/caribou/-/merge_requests/3
https://gitlab.gnome.org/GNOME/caribou/-/commit/d41c8e44b12222a290eaca16703406b113a630c6