CVE-2022-49405 staging: r8188eu: prevent ->Ssid overflow in rtw_wx_set_scan()

High 7.8 Published 26 Feb 2025 Updated 5 Aug 2026

A buffer overflow in the r8188eu Wi-Fi driver allows attackers to write beyond array bounds, potentially leading to code execution or privilege escalation.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2022-49405?

CVE-2022-49405 is a high-severity memory corruption vulnerability in Linux kernel, published on 26 Feb 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:

staging: r8188eu: prevent ->Ssid overflow in rtw_wx_set_scan()

This code has a check to prevent read overflow but it needs another check to prevent writing beyond the end of the ->Ssid[] array.

Which versions are affected by CVE-2022-49405?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2022-49405?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2022-49405 being exploited?

There is no known exploitation of CVE-2022-49405 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as DEBIAN-CVE-2022-49405, GHSA-m5jx-7mgf-q66f, UBUNTU-CVE-2022-49405.