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

wifi: rtlwifi: remove unused check_buddy_priv

Commit 2461c7d60f9f ("rtlwifi: Update header file") introduced a global
list of private data structures.

Later on, commit 26634c4b1868 ("rtlwifi Modify existing bits to match
vendor version 2013.02.07") started adding the private data to that list at
probe time and added a hook, check_buddy_priv to find the private data from
a similar device.

However, that function was never used.

Besides, though there is a lock for that list, it is never used. And when
the probe fails, the private data is never removed from the list. This
would cause a second probe to access freed memory.

Remove the unused hook, structures and members, which will prevent the
potential race condition on the list and its corruption during a second
probe when probe fails.

https://git.kernel.org/stable/c/006e803af7408c3fc815b0654fc5ab43d34f0154

https://git.kernel.org/stable/c/1e39b0486cdb496cdfba3bc89886150e46acf6f4

https://git.kernel.org/stable/c/2fdac64c3c35858aa8ac5caa70b232e03456e120

https://git.kernel.org/stable/c/465d01ef6962b82b1f0ad1f3e58b398dbd35c1c1

https://git.kernel.org/stable/c/543e3e9f2e9e47ded774c74e680f28a0ca362aee