{"id":"UBUNTU-CVE-2021-20315","details":"A locking protection bypass flaw was found in some versions of gnome-shell as shipped within CentOS Stream 8, when the \"Application menu\" or \"Window list\" GNOME extensions are enabled. This flaw allows a physical attacker who has access to a locked system to kill existing applications and start new ones as the locked user, even if the session is still locked.","modified":"2025-08-01T04:53:00Z","published":"2022-02-18T18:15:00Z","withdrawn":"2025-08-01T19:37:46Z","upstream":["CVE-2021-20315"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-20315"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2006285"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-20315"}],"affected":[{"package":{"name":"gnome-shell","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/gnome-shell@3.18.5-0ubuntu0.3+esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.16.4-0ubuntu1","3.18.1-1ubuntu1","3.18.2-0ubuntu1","3.18.2-0ubuntu2","3.18.3-3ubuntu1","3.18.4-0ubuntu1","3.18.4-0ubuntu2","3.18.4-0ubuntu3","3.18.5-0ubuntu0.1","3.18.5-0ubuntu0.2","3.18.5-0ubuntu0.3","3.18.5-0ubuntu0.3+esm1"],"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20315.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}