USN-5279-1: util-linux vulnerabilities

Publication date

9 February 2022

Overview

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


Packages

Details

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.

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

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
21.10 impish mount –  2.36.1-8ubuntu2.2
util-linux –  2.36.1-8ubuntu2.2
20.04 focal mount –  2.34-0.1ubuntu9.3
util-linux –  2.34-0.1ubuntu9.3

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