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JLSEC-2025-192 Medium 5.5

A logic error was found in the libmount library of util-linux in the function that allows an...

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JLSEC Published
Modified
Severity
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Packages
Libmount_jll < 2.39.3+0
Libuuid_jll < 2.39.3+0
util_linux_jll < 2.39.3+0
Upstream
CVE-2021-3995

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.

References