CVE-2026-46152 wifi: mac80211: drop stray 'static' from fast-RX rx_result
A race condition in the Linux kernel Wi-Fi driver allows concurrent packet processing to corrupt state, potentially causing packet misrouting or drops.
- 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-2026-46152?
CVE-2026-46152 is a high-severity vulnerability in Linux kernel, published on 28 May 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: mac80211: drop stray 'static' from fast-RX rx_result
ieee80211_invoke_fast_rx() is documented as safe for parallel RX, but its per-invocation rx_result is declared static. Concurrent callers then share one instance and can overwrite each other's result between ieee80211_rx_mesh_data() and the switch on res.
That can make a packet that was queued or consumed by ieee80211_rx_mesh_data() fall through into ieee80211_rx_8023(), or make a packet that should continue return as queued.
Make res an automatic variable so each invocation keeps its own result.
Which versions are affected by CVE-2026-46152?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-46152?
Apply the vendor's patch.
Is CVE-2026-46152 being exploited?
There is no known exploitation of CVE-2026-46152 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-89106, BELL-CVE-2026-46152, DEBIAN-CVE-2026-46152, GHSA-j32m-c4xq-vrpg, ROOT-OS-UBUNTU-2404-CVE-2026-46152, UBUNTU-CVE-2026-46152.