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

wifi: wil6210: debugfs: fix uninitialized variable use in wil_write_file_wmi()

Commit 7a4836560a61 changes simple_write_to_buffer() with memdup_user()
but it forgets to change the value to be returned that came from
simple_write_to_buffer() call. It results in the following warning:

warning: variable 'rc' is uninitialized when used here [-Wuninitialized]
return rc;
^~

Remove rc variable and just return the passed in length if the
memdup_user() succeeds.

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-50165
• https://git.kernel.org/stable/c/409bd72e544fdf4809ea0dac337bb5a1f11a25a9
• https://git.kernel.org/stable/c/52b11a48cf073e0aab923ae809a765d756cecf13
• https://git.kernel.org/stable/c/689e5caf63e99e15d2f485ec297c1bf9243e0e28
• https://git.kernel.org/stable/c/6c5fee83bdbeffe8d607d1ab125122a75f40bd1a
• https://git.kernel.org/stable/c/b13c84e877d7a3095bacb14665db304b2c00e95f
• https://git.kernel.org/stable/c/c9fde3a44da566d8929070ab6bda4f0dfa9955d0
• https://git.kernel.org/stable/c/d4742c886043b69d2d058bfde3998ef333b66595
• https://git.kernel.org/stable/c/d578e0af3a003736f6c440188b156483d451b329