CVE-2022-50165: linux kernel — Fix

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.

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CVSS v3.1 Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-908 CWE-908

Affected Products

Vendor	Product	Versions
linux	linux_kernel	3.17 — 4.14.291
linux	linux_kernel	4.15 — 4.19.256
linux	linux_kernel	4.20 — 5.4.211
linux	linux_kernel	5.5 — 5.10.137
linux	linux_kernel	5.11 — 5.15.61
linux	linux_kernel	5.16 — 5.18.18
linux	linux_kernel	5.19 — 5.19.2

References

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2022-50165? +

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. It has a CVSS v3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-50165? +

CVE-2022-50165 has a CVSS v3.1 score of 5.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2022-50165? +

CVE-2022-50165 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2022-50165? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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