What is CVE-2021-3732?

CVE-2021-3732 is a medium-severity vulnerability in Linux Kernel, classified under Information Disclosure. CVSS score: 5.5/10. Published 2022-03-10.

How severe is CVE-2021-3732?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Information disclosure in Linux Kernel

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.

Vulnerability class: Information Disclosure

EPSS: 0.003 (25.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Linux Linux_kernel — versions 5.14
N/a Kernel — versions Affects kernel before v5.13.11, Fixed in v5.14-rc6 and later.

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
secalert@redhat.com (Third Party Advisory, x_refsource_MISC)
secalert@redhat.com (Patch, Mailing List, x_refsource_MISC, Vendor Advisory)
secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-3732?: CVE-2021-3732 is a medium-severity vulnerability in Linux Kernel, classified under Information Disclosure. CVSS score: 5.5/10. Published 2022-03-10.
How severe is CVE-2021-3732?: Medium severity. CVSS v3 base score is 5.5 out of 10.