UBUNTU-CVE-2021-3732
A flaw was found in the Linux kernel's OverlayFS subsystem in the way the user mounts the TmpFS filesystem with OverlayFS. This flaw allows a local user to gain access to hidden files that should not be accessible.
02 / AFFECTED SOFTWARE
Affected packages
50 explicit affected versions
6 explicit affected versions
5 explicit affected versions
6 explicit affected versions
6 explicit affected versions
191 explicit affected versions
70 explicit affected versions
32 explicit affected versions
50 explicit affected versions
23 explicit affected versions
82 explicit affected versions
4 explicit affected versions
23 explicit affected versions
83 explicit affected versions
1 explicit affected versions
1 explicit affected versions
21 explicit affected versions
1 explicit affected versions
7 explicit affected versions
12 explicit affected versions
5 explicit affected versions
1 explicit affected versions
3 explicit affected versions
35 explicit affected versions
43 explicit affected versions
5 explicit affected versions
35 explicit affected versions
25 explicit affected versions
10 explicit affected versions
149 explicit affected versions
19 explicit affected versions
82 explicit affected versions
48 explicit affected versions
1 explicit affected versions
20 explicit affected versions
1 explicit affected versions
29 explicit affected versions
13 explicit affected versions
64 explicit affected versions
1 explicit affected versions
37 explicit affected versions
33 explicit affected versions
10 explicit affected versions
49 explicit affected versions
11 explicit affected versions
6 explicit affected versions
72 explicit affected versions
7 explicit affected versions
35 explicit affected versions
2 explicit affected versions
68 explicit affected versions
31 explicit affected versions
1 explicit affected versions
3 explicit affected versions
14 explicit affected versions
26 explicit affected versions
1 explicit affected versions
1 explicit affected versions
30 explicit affected versions
5 explicit affected versions
25 explicit affected versions
1 explicit affected versions
25 explicit affected versions
6 explicit affected versions
1 explicit affected versions
26 explicit affected versions
10 explicit affected versions
23 explicit affected versions
44 explicit affected versions
16 explicit affected versions
4 explicit affected versions
19 explicit affected versions
38 explicit affected versions
9 explicit affected versions
126 explicit affected versions
25 explicit affected versions
61 explicit affected versions
6 explicit affected versions
80 explicit affected versions
57 explicit affected versions
4 explicit affected versions
14 explicit affected versions
48 explicit affected versions
25 explicit affected versions
43 explicit affected versions
1 explicit affected versions
105 explicit affected versions
97 explicit affected versions
12 explicit affected versions
27 explicit affected versions
4 explicit affected versions
14 explicit affected versions
1 explicit affected versions
4 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
A flaw was found in the Linux kernel's OverlayFS subsystem in the way the user mounts the TmpFS filesystem with OverlayFS. This flaw allows a local user to gain access to hidden files that should not be accessible.
05 / REFERENCES
Further evidence
- https://bugzilla.redhat.com/show_bug.cgi?id=1995249
- https://git.kernel.org/linus/427215d85e8d1476da1a86b8d67aceb485eb3631
- https://ubuntu.com/security/CVE-2021-3732
- https://ubuntu.com/security/notices/USN-5094-1
- https://ubuntu.com/security/notices/USN-5094-2
- https://ubuntu.com/security/notices/USN-5096-1
- https://ubuntu.com/security/notices/USN-5113-1
- https://ubuntu.com/security/notices/USN-5115-1
- https://ubuntu.com/security/notices/USN-5116-1
- https://ubuntu.com/security/notices/USN-5116-2
- https://ubuntu.com/security/notices/USN-6001-1
- https://ubuntu.com/security/notices/USN-6013-1
- https://ubuntu.com/security/notices/USN-6014-1
- https://www.cve.org/CVERecord?id=CVE-2021-3732