CVE-2021-3995
published 2022-08-23CVE-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…
medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
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.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | util-linux | < util-linux 2.37.3-1 (bookworm) | util-linux 2.37.3-1 (bookworm) |
| fedoraproject | fedora | — | — |
| kernel | util-linux | — | — |
| kernel | util-linux | >= 0 < 2.36.1-8+deb11u1 | 2.36.1-8+deb11u1 |
| kernel | util-linux | >= 0 < 2.37.3-1 | 2.37.3-1 |
| kernel | util-linux | >= 0 < 2.37.3-1 | 2.37.3-1 |
| kernel | util-linux | >= 0 < 2.37.3-1 | 2.37.3-1 |
| kernel | util-linux | >= 2.34 < 2.37.3 | 2.37.3 |
| msrc | cm1_util-linux_2.32.1-7_on_cbl_mariner_1.0 | — | — |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM