CVE-2022-50165 Information

Description

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.

Reference

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

Related CNNVD

CNNVD-202506-2454 (Published: 2025-06-18)