Thursday, February 10, 2022

Ubuntu Security Notice USN-5279-1

Ubuntu Security Notice USN-5279-1
February 09, 2022

util-linux vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 21.10
- Ubuntu 20.04 LTS


util-linux could be made to unmount FUSE filesystems belonging to other

Software Description:
- util-linux: miscellaneous system utilities


It was discovered that util-linux incorrectly handled unmounting FUSE
filesystems. A local attacker could possibly use this issue to unmount
FUSE filesystems belonging to other users.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 21.10:
mount 2.36.1-8ubuntu2.2
util-linux 2.36.1-8ubuntu2.2

Ubuntu 20.04 LTS:
mount 2.34-0.1ubuntu9.3
util-linux 2.34-0.1ubuntu9.3

In general, a standard system update will make all the necessary changes.

CVE-2021-3995, CVE-2021-3996

Package Information:

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