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Change History

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

usb: legacy: ncm: Fix NPE in gncm_bind

Commit 56a512a9b410 ("usb: gadget: f_ncm: align net_device lifecycle
with bind/unbind") deferred the allocation of the net_device. This
change leads to a NULL pointer dereference in the legacy NCM driver as
it attempts to access the net_device before it's fully instantiated.

Store the provided qmult, host_addr, and dev_addr into the struct
ncm_opts->net_opts during gncm_bind(). These values will be properly
applied to the net_device when it is allocated and configured later in
the binding process by the NCM function driver.

https://git.kernel.org/stable/c/b23e86a3a15803c3dcb24701285f73e65099fdf9

https://git.kernel.org/stable/c/be5738d19bed244ede84da45bc45395bcb1d99e0

https://git.kernel.org/stable/c/fde0634ad9856b3943a2d1a8cc8de174a63ac840