Vulnerability CVE-2022-48720
Published: 2024-06-20

Description:
In the Linux kernel, the following vulnerability has been resolved:

net: macsec: Fix offload support for NETDEV_UNREGISTER event

Current macsec netdev notify handler handles NETDEV_UNREGISTER event by
releasing relevant SW resources only, this causes resources leak in case
of macsec HW offload, as the underlay driver was not notified to clean
it's macsec offload resources.

Fix by calling the underlay driver to clean it's relevant resources
by moving offload handling from macsec_dellink() to macsec_common_dellink()
when handling NETDEV_UNREGISTER event.

 References:
https://git.kernel.org/stable/c/2e7f5b6ee1a7a2c628253a95b0a95b582901ef1b
https://git.kernel.org/stable/c/e7a0b3a0806dae3cc81931f0e83055ca2ac6f455
https://git.kernel.org/stable/c/8299be160aad8548071d080518712dec0df92bd5
https://git.kernel.org/stable/c/9cef24c8b76c1f6effe499d2f131807c90f7ce9a
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