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CVEs-PoC/2021/CVE-2021-3995.md
2025-09-29 21:09:30 +02:00

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CVE-2021-3995

Description

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 an unprivileged local attacker to unmount FUSE filesystems that belong to certain other users who have a UID that is a prefix of the UID of the attacker in its string form. An attacker may use this flaw to cause a denial of service to applications that use the affected filesystems.

POC

Reference

Github