CVE-2022-50165 wifi: wil6210: debugfs: fix uninitialized variable use in `wil_write_file_wmi()`

What is CVE-2022-50165?

CVE-2022-50165 is a medium-severity vulnerability in Linux kernel, published on 18 Jun 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-908

Which versions are affected by CVE-2022-50165?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-50165?

Apply the vendor's patch.

Is CVE-2022-50165 being exploited?

There is no known exploitation of CVE-2022-50165 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2022-50165, GHSA-q529-wqg7-hj25, UBUNTU-CVE-2022-50165.