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

llc: fix SAP refcount leak in llc_ui_autobind()

llc_ui_autobind() opens a SAP after choosing a dynamic LSAP.
llc_sap_open() returns a reference owned by the caller, and
llc_sap_add_socket() takes a second reference for the socket's
membership in the SAP hash tables.

llc_ui_bind() drops the caller's reference after adding the socket,
but llc_ui_autobind() keeps it. When the socket is closed,
llc_sap_remove_socket() releases only the socket reference, leaving
the SAP on llc_sap_list with sk_count == 0.

This is user-visible because repeated autobind and close cycles can consume
all dynamic SAP values and make later autobinds fail with -EUSERS.

Drop the caller's reference after a successful autobind, matching
llc_ui_bind()'s ownership model.

https://git.kernel.org/stable/c/21a537606fe35be2b85971a5fd35c0023b6ef98f

https://git.kernel.org/stable/c/61a7ff4a62003b55a15022567486741b3bd83914

https://git.kernel.org/stable/c/660667cd406648bbaffbd5c0d897c2263a852f11

https://git.kernel.org/stable/c/79dc4b508e3f2649390a1f745f7657813e5938ec

https://git.kernel.org/stable/c/a2f9fa31ae021ef1fdcaf3ab17bd49f9223dd6a4

https://git.kernel.org/stable/c/b2fc9955ddc7c4ca03be44b995193bd6486c62e1

https://git.kernel.org/stable/c/b589a965184dde49c43b8caf5bcc65715a7b4ef2

https://git.kernel.org/stable/c/c7881b6088276601beaccb7440b8d56eab0d65ae

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