CVE-2024-42125 wifi: rtw89: fw: scan offload prohibit all 6 GHz channel if no 6 GHz sband
A missing null check in the rtw89 WiFi driver causes a kernel crash when 6 GHz channels are disabled via BIOS, leading to denial of service.
- 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-2024-42125?
CVE-2024-42125 is a medium-severity vulnerability in Linux kernel, published on 30 Jul 2024. 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: rtw89: fw: scan offload prohibit all 6 GHz channel if no 6 GHz sband
We have some policy via BIOS to block uses of 6 GHz. In this case, 6 GHz sband will be NULL even if it is WiFi 7 chip. So, add NULL handling here to avoid crash.
Weakness: CWE-476
Which versions are affected by CVE-2024-42125?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-42125?
Apply the vendor's patch.
Is CVE-2024-42125 being exploited?
There is no known exploitation of CVE-2024-42125 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-42125, DEBIAN-CVE-2024-42125, GHSA-m93m-c433-q3h9, ROOT-OS-DEBIAN-12-CVE-2024-42125, ROOT-OS-UBUNTU-2204-CVE-2024-42125, ROOT-OS-UBUNTU-2404-CVE-2024-42125 and 1 more.