CVE-2025-68738 wifi: mt76: mt7996: fix null pointer deref in mt7996_conf_tx()
A null pointer dereference in the mt7996 Wi-Fi driver can cause a kernel crash, leading to denial of service for local or adjacent attackers.
- 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-2025-68738?
CVE-2025-68738 is a vulnerability in Linux, published on 24 Dec 2025. 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: mt76: mt7996: fix null pointer deref in mt7996_conf_tx()
If a link does not have an assigned channel yet, mt7996_vif_link returns NULL. We still need to store the updated queue settings in that case, and apply them later. Move the location of the queue params to within struct mt7996_vif_link.
Which versions are affected by CVE-2025-68738?
How do I fix CVE-2025-68738?
Apply the vendor's patch.
Is CVE-2025-68738 being exploited?
There is no known exploitation of CVE-2025-68738 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2025-68738, DEBIAN-CVE-2025-68738, GHSA-826h-4v2p-vwp5, UBUNTU-CVE-2025-68738.