hso_free_net_device in drivers/net/usb/hso.c in the Linux kernel through 5.13.4 calls unregister_netdev without checking for the NETREG_REGISTERED state, leading to a use-after-free and a double free. Reference: https://www.spinics.net/lists/linux-usb/msg202228.html
Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1985354]
This was fixed for Fedora with the 5.13.6 stable kernel updates.
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2022:1975 https://access.redhat.com/errata/RHSA-2022:1975
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2022:1988 https://access.redhat.com/errata/RHSA-2022:1988
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2021-37159