DEBIAN-CVE-2021-3995

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Source
https://security-tracker.debian.org/tracker/CVE-2021-3995
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-3995.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2021-3995
Upstream
Published
2022-08-23T20:15:08Z
Modified
2025-09-25T23:27:07.665187Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

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

Affected packages

Debian:11 / util-linux

Package

Name
util-linux
Purl
pkg:deb/debian/util-linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.36.1-8+deb11u1

Affected versions

2.*

2.36.1-8

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / util-linux

Package

Name
util-linux
Purl
pkg:deb/debian/util-linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.37.3-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / util-linux

Package

Name
util-linux
Purl
pkg:deb/debian/util-linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.37.3-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / util-linux

Package

Name
util-linux
Purl
pkg:deb/debian/util-linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.37.3-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}