Ensure mounting of jffs2 filesystems is disabled - modprobe

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The jffs2 (journaling flash filesystem 2) filesystem type is a log-structured filesystem used in flash memory devices.


Removing support for unneeded filesystem types reduces the local attack surface of the system. If this filesystem type is not needed, disable it.


Edit or create a file in the /etc/modprobe.d/ directory ending in .conf
Example: vi /etc/modprobe.d/jffs2.conf
and add the following line:

install jffs2 /bin/true

Run the following command to unload the jffs2 module:

# rmmod jffs2

See Also