{"id":"USN-5141-1","summary":"firejail vulnerability","details":"Roman Fiedler discovered that a race condition existed in Firejail\nwhen using OverlayFS to prevent writes to the underlying file system. A\nlocal attacker could use this to gain administrative privileges. Note:\nthis update disables support for OverlayFS in Firejail.\n","modified":"2026-04-27T16:11:50.431516Z","published":"2021-11-11T07:52:38Z","related":["UBUNTU-CVE-2021-26910"],"upstream":["CVE-2021-26910","UBUNTU-CVE-2021-26910"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5141-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-26910"}],"affected":[{"package":{"name":"firejail","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/firejail@0.9.62-3ubuntu0.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.9.62-3ubuntu0.1"}]}],"versions":["0.9.60-2","0.9.62-1","0.9.62-2","0.9.62-3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"firejail","binary_version":"0.9.62-3ubuntu0.1"},{"binary_name":"firejail-profiles","binary_version":"0.9.62-3ubuntu0.1"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2021-26910","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5141-1.json"}}],"schema_version":"1.7.5"}