Vulnerability 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.
CVSS Score
5.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 5.14 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1995249Issue TrackingPatchThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=42Mailing ListPatchVendor Advisory
- https://github.com/torvalds/linux/commit/427215d85e8d1476da1a86b8d67aceb485eb363PatchThird Party Advisory
- https://ubuntu.com/security/CVE-2021-3732Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1995249Issue TrackingPatchThird Party Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=42Mailing ListPatchVendor Advisory
- https://github.com/torvalds/linux/commit/427215d85e8d1476da1a86b8d67aceb485eb363PatchThird Party Advisory
- https://ubuntu.com/security/CVE-2021-3732Third Party Advisory
FAQ
What is CVE-2021-3732?
CVE-2021-3732 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 ...
How severe is CVE-2021-3732?
CVE-2021-3732 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3732?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.