CVE-2020-36322

A denial of service flaw was found in fuse_do_getattr in fs/fuse/dir.c in the kernel side of the FUSE filesystem in the Linux kernel. A local user could use this flaw to crash the system.

This issue affected Linux kernel versions as shipped with Red Hat Enterprise Linux from 8.3 and prior the versions. RHEL 8.4 and later versions are not affected.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

As the FUSE module will be auto-loaded when required, its use can be disabled by preventing the module from loading with the following instructions:

echo "install fuse /bin/true" >> /etc/modprobe.d/disable-fuse.conf

The system will need to be restarted if the FUSE modules are loaded. In most circumstances, the CIFS kernel modules will be unable to be unloaded while the FUSE filesystems are in use.

If the system requires this module to work correctly, this mitigation may not be suitable.

If you need further assistance, see KCS article https://access.redhat.com/solutions/41278 or contact Red Hat Global Support Services.