{"id":"UBUNTU-CVE-2021-4115","details":"There is a flaw in polkit which can allow an unprivileged user to cause polkit to crash, due to process file descriptor exhaustion. The highest threat from this vulnerability is to availability. NOTE: Polkit process outage duration is tied to the failing process being reaped and a new one being spawned","modified":"2026-04-22T13:01:23.620292Z","published":"2022-02-14T13:00:00Z","related":["USN-5304-1"],"upstream":["CVE-2021-4115"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-4115"},{"type":"REPORT","url":"https://securitylab.github.com/advisories/GHSL-2021-077-polkit/"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5304-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-4115"}],"affected":[{"package":{"name":"policykit-1","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/policykit-1@0.105-26ubuntu1.3?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.105-26ubuntu1.3"}]}],"versions":["0.105-26ubuntu1","0.105-26ubuntu1.1","0.105-26ubuntu1.2"],"ecosystem_specific":{"binaries":[{"binary_name":"gir1.2-polkit-1.0","binary_version":"0.105-26ubuntu1.3"},{"binary_name":"libpolkit-agent-1-0","binary_version":"0.105-26ubuntu1.3"},{"binary_name":"libpolkit-gobject-1-0","binary_version":"0.105-26ubuntu1.3"},{"binary_version":"0.105-26ubuntu1.3","binary_name":"policykit-1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4115.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}