cvedb.io
CVE-2021-3996
MEDIUM · CVSS 5.5
EPSS exploitation probability: 0%
Published 2022-08-23T20:15:08.560 · Last modified 2026-06-17T04:06:21.753

Summary

A logic error was found in the libmount library of util-linux in the function that allows an unprivileged user to unmount a FUSE filesystem. This flaw allows a local user on a vulnerable system to unmount other users' filesystems that are either world-writable themselves (like /tmp) or mounted in a world-writable directory. An attacker may use this flaw to cause a denial of service to applications that use the affected filesystems.

Affected products

kernel — util-linux

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.