OverlayFS in the Linux kernel before 3.0.0-16.28, as used in Ubuntu 10.0.4 LTS and 11.10, is missing inode security checks which could allow attackers to bypass security restrictions and perform unauthorized actions.
http://www.openwall.com/lists/oss-security/2012/01/17/11
http://www.ubuntu.com/usn/USN-1363-1
http://www.ubuntu.com/usn/USN-1364-1
http://www.ubuntu.com/usn/USN-1384-1
https://access.redhat.com/security/cve/cve-2012-0055
Source: MITRE
Published: 2020-02-19
Updated: 2020-02-28
Type: CWE-862
Base Score: 7.2
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Impact Score: 10
Exploitability Score: 3.9
Severity: HIGH
Base Score: 7.8
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1.8
Severity: HIGH