CVE-2024-27434 wifi: iwlwifi: mvm: don't set the MFP flag for the GTK
A misconfiguration in the iwlwifi driver can cause firmware crashes when using TKIP with Management Frame Protection, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-27434?
CVE-2024-27434 is a high-severity denial of service vulnerability in Linux kernel, published on 17 May 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: iwlwifi: mvm: don't set the MFP flag for the GTK
The firmware doesn't need the MFP flag for the GTK, it can even make the firmware crash. in case the AP is configured with: group cipher TKIP and MFPC. We would send the GTK with cipher = TKIP and MFP which is of course not possible.
Which versions are affected by CVE-2024-27434?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-27434?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2024-27434 being exploited?
There is no known exploitation of CVE-2024-27434 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2024-27434, DEBIAN-CVE-2024-27434, GHSA-v876-q68f-39fv, UBUNTU-CVE-2024-27434.