CVE-2026-90345 wifi: brcmfmac: fix P2P action frame handling without device vif
A null pointer dereference in the brcmfmac Wi-Fi driver allows local attackers to cause a system crash via crafted P2P action frames.
- 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-2026-90345?
CVE-2026-90345 is a vulnerability in Linux, published on 17 Sep 2026. 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: brcmfmac: fix P2P action frame handling without device vif
Some P2P action frame paths assume the P2P device vif is always available. That is not true when userspace sends non-P2P public action frames through the primary interface, or when action-frame abort runs after the P2P device vif has not been created.
Fall back to the primary vif when aborting an action frame without a P2P device vif, and guard P2P device saved IE access before using it for peer channel search.
Which versions are affected by CVE-2026-90345?
How do I fix CVE-2026-90345?
Apply the vendor's patch.
Is CVE-2026-90345 being exploited?
There is no known exploitation of CVE-2026-90345 in the wild and no public exploit code.
Sources
Also known as AZL-102779, BELL-CVE-2026-90345, DEBIAN-CVE-2026-90345, GHSA-4cvp-2fxw-jr85, UBUNTU-CVE-2026-90345.