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CNF-25994: Blacklist unused filesystem kernel modules #1951

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CNF-25994: Blacklist unused filesystem kernel modules #1951

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CNF-25994: Blacklist unused filesystem kernel modules
sebrandon1 Aug 3, 2026
6134e7c
Merge branch 'master' into hardening/blacklist-filesystem-modules
sebrandon1 Sep 4, 2026
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13 changes: 13 additions & 0 deletions etc/modprobe.d/blacklist-unused-filesystems.conf
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# Blacklist unused filesystem kernel modules
# These filesystem types have no legitimate use on a container host OS.
# CIS Benchmark RHEL 9 v2.0.0, Section 1.1.1 (Level 1 Server)
#
# Excluded from this list:
# squashfs - used by CoreOS live PXE rootfs
# udf - used by Azure/Hyper-V for provisioning (Ignition)
# usb-storage - needed for BMC virtual media and bare-metal provisioning
install cramfs /bin/true
install freevxfs /bin/true
install hfs /bin/true
install hfsplus /bin/true
install jffs2 /bin/true