CVE-2024-35789 wifi: mac80211: check/clear fast rx for non-4addr sta VLAN changes
A use-after-free vulnerability in the Linux kernel's mac80211 Wi-Fi subsystem allows attackers to cause crashes or potentially execute code via VLAN changes.
- 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-2024-35789?
CVE-2024-35789 is a high-severity use after free vulnerability in Debian Debian Linux, 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: mac80211: check/clear fast rx for non-4addr sta VLAN changes
When moving a station out of a VLAN and deleting the VLAN afterwards, the fast_rx entry still holds a pointer to the VLAN's netdev, which can cause use-after-free bugs. Fix this by immediately calling ieee80211_check_fast_rx after the VLAN change.
Weakness: CWE-416
Which versions are affected by CVE-2024-35789?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2024-35789?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2024-35789 being exploited?
There is no known exploitation of CVE-2024-35789 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as BELL-CVE-2024-35789, DEBIAN-CVE-2024-35789, GHSA-v4h4-wp66-6q5x, UBUNTU-CVE-2024-35789.