CVE-2024-43912 wifi: nl80211: disallow setting special AP channel widths
Attackers can cause denial of service by setting unsupported AP channel widths in the Linux kernel Wi-Fi subsystem.
- 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-2024-43912?
CVE-2024-43912 is a medium-severity denial of service vulnerability in Linux kernel, published on 26 Aug 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: nl80211: disallow setting special AP channel widths
Setting the AP channel width is meant for use with the normal 20/40/... MHz channel width progression, and switching around in S1G or narrow channels isn't supported. Disallow that.
Which versions are affected by CVE-2024-43912?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2024-43912?
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-2024-43912 being exploited?
There is no known exploitation of CVE-2024-43912 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-48648, BELL-CVE-2024-43912, DEBIAN-CVE-2024-43912, GHSA-j57w-4p34-g57x, ROOT-OS-DEBIAN-11-CVE-2024-43912, ROOT-OS-UBUNTU-2204-CVE-2024-43912 and 1 more.