Description
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.
References (4)
Core 4
Core References
Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1995249
Third Party Advisory x_refsource_misc
https://ubuntu.com/security/CVE-2021-3732
Mailing List, Patch, Vendor Advisory x_refsource_misc
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=427215d85e8d1476da1a86b8d67aceb485eb3631
Patch, Third Party Advisory x_refsource_misc
https://github.com/torvalds/linux/commit/427215d85e8d1476da1a86b8d67aceb485eb3631
Scores
CVSS v3
5.5
EPSS
0.0002
EPSS Percentile
6.5%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-200
Status
published
Products (2)
linux/linux_kernel
5.14 (6 CPE variants)
linux/linux_kernel
< 5.14
Published
Mar 10, 2022
Tracked Since
Feb 18, 2026